## Issue
Closes 5721: Publish-Preview updates
## Changes
(1) Match the recent "incognito" change that sets the channel to `undefined` via `updatePublishForm`. This change would also cover `null` -- I don't think it's being used to represent something else, so showing "Anonymous" for `null` should be fine.
(2) Added channel icons, so it'll be more obvious to the user if they accidentally selected the wrong channel.
## Issue
Closes 5687: Ensure post mode has no text limit
## Changes
- `type="markdown"` can now have unlimited length if clients don't define `textAreaMaxWidth`.
- The internal default limit of 2000 is narrowed down to `type=textarea`.
## Issue
Closes 3661: Autoplay + Related go into loops ( infinite ) sometimes
## GUI
Push the actual "next" item into the top of the list.
## History search
1. Skip if the next item is itself.
2. The URL stored in the history comes in various forms, so a direct comparison won't work.
- There's also a weird case where the URL differs by just a little (p.09 vs p-09), but with the same claim ID:
lbry://vacuum-tube-computer-p.09-–-building#5212bc8bc63c373e2bf1ebc5b765595ed7b6514d
lbry://vacuum-tube-computer-p-09-–-building#5212bc8bc63c373e2bf1ebc5b765595ed7b6514d
Check the claim_id as well to cover cases like these.
## Issue
Closes 5537: Allow youtube sync new pass language to api
## Notes
- Default language for the selector comes from browser (`navigator.language`)
## Changes
- Restore original code for how Volume and Mute is restored.
- Playback rate will be only change that gets "re-restored" in "loadedmetadata".
## Issue
5513: Video-setting persistence broken
## Notes
- Per videojs recommendation, the setting-restoration should be done after the video has been loaded, so the action was moved to `loadedmetadata`. This fixed the volume slider problem, and should have fixed the playbackRate too.
- For playbackRate, there is another special case where it gets reset to 1 (refer to comments in code).
