parent #13328

This PR addresses a comment in PR #13900

"When I click on "Restore site" it navigates me to Warning screen -> there is a noticeable animation glitch -> the cancel button appears after a delay and the confirmation button changes it's vertical position a bit"

To fix the issue I removed setHasStableIds(true) because the adapter is being reused and the view holders are not the same.

To test:

• Launch the app
• Navigate to Activity Log
• Tap on the more menu for an item
• Tap on Restore to this point
• Tap on Restore Site to get to the warning view
• Note that the Cancel button doesn't jump and confirmation button doesn't change position.

PR submission checklist:

• I have considered adding unit tests where possible.
• 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.