chore: convert HelpDialog to ViewBinding

[david-allison]

• Part of Add View Binding #11116

Approach

• Cherry picked david-allison@cf46074
• Converted to vbpd

How Has This Been Tested?

Brief test:

Pixel 9 Pro - Help is usable

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

[david-allison]

Flaky test =>

• test: mark 'previous button' as flaky #20084

[lukstbit]

Why not use binding for this as well:

val contentRow = ItemHelpEntryBinding.inflate(layoutInflater, binding.pageContent, false).root

[BrayanDSO]

lukstbit's comment is still good -> Needs Author Reply

[david-allison]

Thanks for holding off! I made the change, but the push failed

[david-allison]

Force pushed and retested