[Feature] Align Android launch command class name with command id

[EmmaYuan1015]

Background

In src/extension/commands/launchAndroidEmulator.ts, the command class name and command codeName are inconsistent.

• Class name: LaunchAndroidEmulator
• codeName: launchAndroidSimulator
• External command id (from package contribution): reactNative.launchAndroidSimulator

This mismatch adds cognitive overhead and caused a TODO comment in code.

Problem

Although runtime behavior is currently correct (registration uses codeName), the naming inconsistency can confuse maintainers and makes code search/refactoring less clear.

Proposed change

• Rename class LaunchAndroidEmulator -> LaunchAndroidSimulator
• Keep codeName = "launchAndroidSimulator" unchanged
• Remove the TODO comment about naming mismatch

Why this is safe

• External command id remains unchanged: reactNative.launchAndroidSimulator
• Command registration logic still uses reactNative.${this.codeName}
• No behavior change expected, this is a naming consistency cleanup only

Acceptance criteria

• Class name and codeName are semantically aligned
• No TODO remains for this mismatch
• Build/tests pass without functional regressions