Replace/Remove Close reviewer and sync

[BrayanDSO]

And tbh, idk why that is a command. Syncing when leaving the app is the most natural option, doesn't require a command, and can be done in the background. Also, the desktop version doesn't have something similar.

"But someone may want to use it". People may want to have a command to close and open the browser, or the note editor, or whatever, but obviously a command to every one of them isn't a good idea. A Sync command makes more sense than Close and sync

Originally posted by @BrayanDSO in #17585 (review)

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Proposal: Remove Close reviewer and sync

Preferred alternative: Replace it with a Sync command.

@Arthur-Milchior is doing most of that in #17399, including a toolbar menu action. Adding a command after that should be easy