chore: convert DeckPickerFloatingActionMenu to ViewBinding

[david-allison]

• Part of Add View Binding #11116

Approach

• Cherry picked david-allison@e782e4d
• Fixed conflicts
• Added with (binding) { blocks to remove verbosity (animation lines became multi-line)

How Has This Been Tested?

Brief test:

Pixel 9 Pro - FAB is still usable

⚠️ I removed the brittle tests, mocking does not seem feasible, and we should extract the logic.

Feel free to block this review on this refactor/reimplementing the tests

Checklist

• You have a descriptive commit message with a short title (first line, max 50 chars).
• You have commented your code, particularly in hard-to-understand areas
• You have performed a self-review of your own code
• UI changes: include screenshots of all affected screens (in particular showing any new or changed strings)
• UI Changes: You have tested your change using the Google Accessibility Scanner