Upgrade bUnit to v2 and migrate test interactions to async event handlers

[Copilot]

• Investigate failing CI run and collect actionable compiler warnings/errors from logs
• Update bUnit v2 migration issues in tests (RenderComponent -> Render, remove deprecated API usage)
• Update test context base type and disposal to remove bUnit v2 warnings
• Run targeted dotnet test for JournalApp.Tests (or capture sandbox workload limitation)
• Address remaining warning(s) directly related to this change set with minimal edits
• Run code review and CodeQL checks
• Reply to PR comment with commit hash once fixes are pushed

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[danielchalmers]

@copilot Fix warnings and errors:

Run dotnet test
  Determining projects to restore...
  Restored D:\a\JournalApp\JournalApp\JournalApp.Tests\JournalApp.Tests.csproj (in 51.48 sec).
  Restored D:\a\JournalApp\JournalApp\JournalApp\JournalApp.csproj (in 1.55 min).
Warning: D:\a\JournalApp\JournalApp\JournalApp\MauiProgram.cs(17,23): warning CA1416: This call site is reachable on all platforms. 'AppBuilderExtensions.UseMauiCommunityToolkit(MauiAppBuilder, Action<Options>?)' is only supported on: 'Android' 21.0 and later, 'iOS' 15.0 and later, 'maccatalyst' 15.0 and later, 'Tizen' 6.5 and later, 'Windows' 10.0.17763 and later. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1416) [D:\a\JournalApp\JournalApp\JournalApp\JournalApp.csproj::TargetFramework=net10.0]
  JournalApp -> D:\a\JournalApp\JournalApp\JournalApp\bin\Debug\net10.0\JournalApp.dll
  JournalApp -> D:\a\JournalApp\JournalApp\JournalApp\bin\Debug\net10.0-android\JournalApp.dll
Warning: D:\a\JournalApp\JournalApp\JournalApp.Tests\JaTestContext.cs(7,39): warning CS0618: 'TestContext' is obsolete: 'Use BunitContext instead. TestContext will be removed in a future release.' (https://bunit.dev/docs/migrations) [D:\a\JournalApp\JournalApp\JournalApp.Tests\JournalApp.Tests.csproj::TargetFramework=net10.0]
Warning: D:\a\JournalApp\JournalApp\JournalApp.Tests\JaTestContext.cs(24,31): warning CS0108: 'JaTestContext.DisposeAsync()' hides inherited member 'BunitContext.DisposeAsync()'. Use the new keyword if hiding was intended. [D:\a\JournalApp\JournalApp\JournalApp.Tests\JournalApp.Tests.csproj::TargetFramework=net10.0]
Error: D:\a\JournalApp\JournalApp\JournalApp.Tests\SafetyPlanTests.razor(16,19): error CS0619: 'BunitContext.RenderComponent<TComponent>()' is obsolete: 'Use Render instead.' (https://bunit.dev/docs/migrations) [D:\a\JournalApp\JournalApp\JournalApp.Tests\JournalApp.Tests.csproj::TargetFramework=net10.0]
Error: D:\a\JournalApp\JournalApp\JournalApp.Tests\SafetyPlanTests.razor(34,19): error CS0619: 'BunitContext.RenderComponent<TComponent>()' is obsolete: 'Use Render instead.' (https://bunit.dev/docs/migrations) [D:\a\JournalApp\JournalApp\JournalApp.Tests\JournalApp.Tests.csproj::TargetFramework=net10.0]
Error: D:\a\JournalApp\JournalApp\JournalApp.Tests\SafetyPlanTests.razor(45,9): error CS0103: The name 'DisposeComponents' does not exist in the current context [D:\a\JournalApp\JournalApp\JournalApp.Tests\JournalApp.Tests.csproj::TargetFramework=net10.0]
Error: D:\a\JournalApp\JournalApp\JournalApp.Tests\SafetyPlanTests.razor(46,15): error CS0619: 'BunitContext.RenderComponent<TComponent>()' is obsolete: 'Use Render instead.' (https://bunit.dev/docs/migrations) [D:\a\JournalApp\JournalApp\JournalApp.Tests\JournalApp.Tests.csproj::TargetFramework=net10.0]
Error: D:\a\JournalApp\JournalApp\JournalApp.Tests\CalendarTests.razor(23,19): error CS0619: 'BunitContext.RenderComponent<TComponent>(Action<ComponentParameterCollectionBuilder<TComponent>>?)' is obsolete: 'Use Render instead.' (https://bunit.dev/docs/migrations) [D:\a\JournalApp\JournalApp\JournalApp.Tests\JournalApp.Tests.csproj::TargetFramework=net10.0]
Error: D:\a\JournalApp\JournalApp\JournalApp.Tests\CalendarTests.razor(54,19): error CS0619: 'BunitContext.RenderComponent<TComponent>(Action<ComponentParameterCollectionBuilder<TComponent>>?)' is obsolete: 'Use Render instead.' (https://bunit.dev/docs/migrations) [D:\a\JournalApp\JournalApp\JournalApp.Tests\JournalApp.Tests.csproj::TargetFramework=net10.0]
Error: D:\a\JournalApp\JournalApp\JournalApp.Tests\DataPointViewTests.razor(90,19): error CS0619: 'BunitContext.RenderComponent<TComponent>(Action<ComponentParameterCollectionBuilder<TComponent>>?)' is obsolete: 'Use Render instead.' (https://bunit.dev/docs/migrations) [D:\a\JournalApp\JournalApp\JournalApp.Tests\JournalApp.Tests.csproj::TargetFramework=net10.0]
Error: D:\a\JournalApp\JournalApp\JournalApp.Tests\CalendarTests.razor(84,19): error CS0619: 'BunitContext.RenderComponent<TComponent>(Action<ComponentParameterCollectionBuilder<TComponent>>?)' is obsolete: 'Use Render instead.' (https://bunit.dev/docs/migrations) [D:\a\JournalApp\JournalApp\JournalApp.Tests\JournalApp.Tests.csproj::TargetFramework=net10.0]
Error: D:\a\JournalApp\JournalApp\JournalApp.Tests\DataPointViewTests.razor(125,19): error CS0619: 'BunitContext.RenderComponent<TComponent>(Action<ComponentParameterCollectionBuilder<TComponent>>?)' is obsolete: 'Use Render instead.' (https://bunit.dev/docs/migrations) [D:\a\JournalApp\JournalApp\JournalApp.Tests\JournalApp.Tests.csproj::TargetFramework=net10.0]
Error: D:\a\JournalApp\JournalApp\JournalApp.Tests\ManageCategoriesTests.razor(249,19): error CS0619: 'BunitContext.RenderComponent<TComponent>()' is obsolete: 'Use Render instead.' (https://bunit.dev/docs/migrations) [D:\a\JournalApp\JournalApp\JournalApp.Tests\JournalApp.Tests.csproj::TargetFramework=net10.0]
Error: D:\a\JournalApp\JournalApp\JournalApp.Tests\DataPointViewTests.razor(153,19): error CS0619: 'BunitContext.RenderComponent<TComponent>(Action<ComponentParameterCollectionBuilder<TComponent>>?)' is obsolete: 'Use Render instead.' (https://bunit.dev/docs/migrations) [D:\a\JournalApp\JournalApp\JournalApp.Tests\JournalApp.Tests.csproj::TargetFramework=net10.0]
Error: D:\a\JournalApp\JournalApp\JournalApp.Tests\DataPointViewTests.razor(190,19): error CS0619: 'BunitContext.RenderComponent<TComponent>(Action<ComponentParameterCollectionBuilder<TComponent>>?)' is obsolete: 'Use Render instead.' (https://bunit.dev/docs/migrations) [D:\a\JournalApp\JournalApp\JournalApp.Tests\JournalApp.Tests.csproj::TargetFramework=net10.0]
Error: D:\a\JournalApp\JournalApp\JournalApp.Tests\DataPointViewTests.razor(211,19): error CS0619: 'BunitContext.RenderComponent<TComponent>(Action<ComponentParameterCollectionBuilder<TComponent>>?)' is obsolete: 'Use Render instead.' (https://bunit.dev/docs/migrations) [D:\a\JournalApp\JournalApp\JournalApp.Tests\JournalApp.Tests.csproj::TargetFramework=net10.0]
  JournalApp -> D:\a\JournalApp\JournalApp\JournalApp\bin\Debug\net10.0-windows10.0.19041.0\win-x64\JournalApp.dll
Error: Process completed with exit code 1.

[Copilot]

@copilot Fix warnings and errors:

...

Fixed in fff62b3 (plus prior migration fixes in f851259). I updated remaining bUnit v2 API usages (RenderComponent -> Render), replaced DisposeComponents() with component disposal in SafetyPlanTests, moved JaTestContext to BunitContext with explicit IAsyncLifetime.DisposeAsync, and narrowed CA1416 suppression to just the UseMauiCommunityToolkit call.