Notification Comment Details: enable feature for release

[ScoutHarris]

Ref: #17790

This enables the new Comment details view for Comment Notifications.

To test:

TLDR - verify everything works as expected.

• Go to Notifications > comment notification.
• Verify the new details view is displayed.
• Verify Spam, Trash, and deleted comments are removed from the notifications list.
• Verify the ⬆️ and ⬇️ nav bar buttons display the previous and next notification.
• Verify Edit, Reply, and Like work as expected.
• Verify the You replied... message appears if you've replied to a comment.

If you do not have permission to the site the notification is for, verify:

• The comment content appears.
• The moderation bar does not.
• Edit nav bar button does not.
• Email address and IP address do not.

Regression Notes

1. Potential unintended areas of impact
   Should be done.

2. What I did to test those areas of impact (or what existing automated tests I relied on)
   Tested Notification Comments and My Site Comments to be sure both work as expected.

3. What automated tests I added (or what prevented me from doing so)
   Updated existing WP tests, new tests added to WPKit.

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 Jetpack changes on this Pull Request by downloading it from AppCenter here with build number: pr18141-f5f0a87. IPA is available here. If you need access to this, you can ask a maintainer to add you.

[wpmobilebot]

You can test the WordPress changes on this Pull Request by downloading it from AppCenter here with build number: pr18141-f5f0a87. IPA is available here. If you need access to this, you can ask a maintainer to add you.

[dvdchr]

🎉