Fix VoiceOver crash when initial screen is Home

[wargcm]

Fixes #19609

Description

Fixes a crash on the dashboard when VoiceOver is enabled.

One class inherits from DynamicHeightCollectionView and the dashboard uses it. The accessibility code has been added to TopicsCollectionView so it continues to work properly with VoiceOver.

Testing

To test:

Testing the launch crash

• Use a real device and login
• Set/verify initial screen is set to Home (Me → App Settings → Initial Screen)
• Close the app
• Enable VoiceOver
• Launch the app
• Verify it does not crash

Reader topics

• Use a real device and enable VoiceOver
• Login
• Navigate to the Reader tab
• Tap on Discover
• Select topics if necessary and hit 'Done'
• Find a post with many tags (Should have an N+ tag like 4+)
• Expand the tags
• Swipe left and verify it voices each tag

Regression Notes

1. Potential unintended areas of impact
   Reader topic VoiceOver

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

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 unit tests for my changes.
• 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 the changes in WordPress from this Pull Request by:

• Clicking here or scanning the QR code below to access App Center
• Then installing the build number pr19751-c5aa0da on your iPhone

If you need access to App Center, please ask a maintainer to add you.

[wpmobilebot]

You can test the changes in Jetpack from this Pull Request by:

• Clicking here or scanning the QR code below to access App Center
• Then installing the build number pr19751-c5aa0da on your iPhone

If you need access to App Center, please ask a maintainer to add you.

[dvdchr]

Reviewing!

[dvdchr]

Tested:

• ✅ Verified launching the app with the Home dashboard set with initial screen doesn't crash.
• ✅ Verified expanding N+ topics and swiping left properly dictates the topics and doesn't crash.