[Jetpack Content Migration Flow] Integrate local migration with UI

[mkevins]

Fixes #17508

To test:

Enable the following flags in the build.gradle

        buildConfigField "boolean", "JETPACK_POWERED_BOTTOM_SHEET", "true"
        buildConfigField "boolean", "JETPACK_SHARED_LOGIN", "true"
        buildConfigField "boolean", "JETPACK_LOCAL_USER_FLAGS", "true"
        buildConfigField "boolean", "JETPACK_BLOGGING_REMINDERS_SYNC", "true"
        buildConfigField "boolean", "JETPACK_READER_SAVED_POSTS", "true"
        buildConfigField "boolean", "JETPACK_PROVIDER_SYNC", "true"
        buildConfigField "boolean", "JETPACK_MIGRATION_FLOW", "true"

Generate some local-only content:

Follow the steps in #17398

Testing steps:

Uninstall the Jetpack app or log out of Jetpack and delete all data.

1. Run the Jetpack app from this branch
2. Expect to be logged in automatically and see the list of your sites
3. Press continue on the next screens
4. Expect to see labels for local content in the post list

Regression Notes

1. Potential unintended areas of impact
   N/A

2. What I did to test those areas of impact (or what existing automated tests I relied on)
   N/A

3. What automated tests I added (or what prevented me from doing so)
   N/A

PR submission checklist:

• I have completed the Regression Notes.
• I have considered adding accessibility improvements for my changes.
• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

[wpmobilebot]

📲 You can test these changes on WordPress by downloading wordpress-installable-build-pr17516-03837ef.apk

	💡 Scan this QR code with your Android phone to download and install the APK directly on it.
	App	WordPress
	Build Flavor	Jalapeno
	Build Type	Debug
	Commit	03837ef

Note: This installable build uses the JalapenoDebug build flavor, and does not support Google Login.

[wpmobilebot]

📲 You can test these changes on Jetpack by downloading jetpack-installable-build-pr17516-03837ef.apk

	💡 Scan this QR code with your Android phone to download and install the APK directly on it.
	App	Jetpack
	Build Flavor	Jalapeno
	Build Type	Debug
	Commit	03837ef

Note: This installable build uses the JalapenoDebug build flavor, and does not support Google Login.

[antonis]

Great work @mkevins 👍
The code changes make sense to me and the UI is cleanly integrated with the migration flow. I've tested the flow on a Pixel 5 (Android 13) and everything worked as expected 🎉

[antonis]

Approved ✅