Latest posts prompt #4193

Summary

Adds support for the latest posts prompt

Testing Considerations

• change url to https://feat-latest-posts-prompt-4089.minds.io/

• polling happens every 30 sec, if at the 30th second you're not in the newsfeed, the button won't update and you should wait for the next interval. There's room to improve this in the future

• have 2 accounts follow each other

• open newsfeed on account A

• create a post on account B

• wait at least 30 seconds

• you should see a button that says "See 1 latest posts"

• Click on it and it should scroll you to the top

• Then the feed should refresh (new feed replaces the old feed)

• button should only appear on latest feed

• make sure front-4089-polling experiment is active

Regression Scope

• all buttons with an icon including subscribe button
• newsfeed header

Platform Affected (web, mobile, etc)

both

Developer Testing Completed

(What has been tested already?)

Screenshots

latestposts

video notes:

• button top padding on android fixed (but is too much in the video)

Does this impact

• Localization
• Dark/light mode
• Guest mode