## Issue
6721 Notifications: Thumbnail for "new content" not showing up in Desktop layout
## Change
The `className` wasn't propagated during the `FileThumbnail` refactoring to `Thumbs`.
## Issue
In the Channel Page, if the _Collections_ `claim_search` comes in after the main content's `claim_search`, the Collection's `ChannelContent` is being re-rendered despite not being in the active Tab. This causes a 0.4 CLS score (it's ridiculous that invisible components are taken into account). Apparently 41% of users are hitting this scenario, causing a poor aggregate.
## Change
Don't mount the `ChannelContent` components unless its tab is the active one. It doesn't seem like Reach Tab hides components under the inactive tab.
No functional change; just thought this is cleaner (group up the constants) and easier to type via IDE auto-complete, at the expense of creating an extra object.
## Issue
Creating Settings suddenly start to stop loading correctly for some of my channels.
## Change
`settings.List` now returns null instead of empty array. Double-checked the Commentron repo and this is indeed the case.
Updated the code to handle null.
## Issue
Closes 6490
Embeds in https://lbry.com/news/2002dtf was crashing in incognito
## Change
Ensure localStorage is available before using it. Jessop warned me before...
## Issue
6068 Fix "Cumulative Layout Shift" for Core Web Vitals
In Posts, the Comments section appears first while we fetch the MD file. When the MD is fetched, Comments get pushed to the bottom (or shifted up for short posts), hence the red CLS scores.
## Approach
There are too many layers between `<FilePage>` and `<DocumentViewer>` to pass the `loading` state around to hide the Comments section, so just make Comments fade in after a 2s delay.
## Changes
- Posts: Add 2s fade-in delay to Comments.
- Posts: remove the gray placeholder. This improves the score a bit more, and reduces flicker as well. There's already a spinner from `FileRenderInline` to tell the user to be patient.
- Posts: add a minimum 30vh height so that short posts don't get collapsed too much, causing the `FileDetails` and Comments to shift. Small shifts are fine as long as CLS is below 0.1.
