Andrei Prigorshnev

UX: show blank page placeholder instead of the blue panel that says "No Activity"

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This fixes next pages: - u/activity - u/activity/likes-given - u/activity/replies Note that a test failure in the Discourse Solved plugin is happening because a test there is testing Core behavior...

_This is a draft PR for now because it's implemented on top of https://github.com/discourse/discourse/pull/16293. After I merge that PR, I'll rebase and open for reviewing this one._ Before: After:

When looking at another user's page, if a user didn't solve any topic, we were showing this: Now we'll be showing this instead: One test is temporarily skipped because this...

Users can hide their public profile and presence information by checking “Hide my public profile and presence features” on the `u/{username}/preferences/interface` page. In that case, we also don't want to...

This column has been ignored since https://github.com/discourse/discourse/pull/24752.

DEV: Drop chat_mention.notifications_id column

1

We don't use this column since https://github.com/discourse/discourse/pull/24670. Note that in that PR the column was already marked as ignored on the model.