Convert CoreDataStack to Swift

[kean]

It's the same contract, but in Swift.

Seealso: A proposal to remove the protocol entirely #25322

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[wpmobilebot]

📲 You can test the changes from this Pull Request in WordPress by scanning the QR code below to install the corresponding build.

	App Name	WordPress
	Configuration	Release-Alpha
	Build Number	31233
	Version	PR #25323
	Bundle ID	org.wordpress.alpha
	Commit	10591fe
	Installation URL	6jfbfsptbgi38

Automatticians: You can use our internal self-serve MC tool to give yourself access to those builds if needed.

[wpmobilebot]

📲 You can test the changes from this Pull Request in Jetpack by scanning the QR code below to install the corresponding build.

	App Name	Jetpack
	Configuration	Release-Alpha
	Build Number	31233
	Version	PR #25323
	Bundle ID	com.jetpack.alpha
	Commit	10591fe
	Installation URL	3kc5ji1dao8do

Automatticians: You can use our internal self-serve MC tool to give yourself access to those builds if needed.

[wpmobilebot]

🤖 Build Failure Analysis

This build has failures. Claude has analyzed them - check the build annotations for details.