## Issue
Closes 3964 `Add Youtuber info to file page`
## Changes
(1) Refactor the YT-info query into `YoutubeBadge` component.
(2) For the File Page case, don't show "- last sync <date>" since the date has nothing to do with the file.
## Test
[x] YT Channel page
[x] YT Channel's claim page
[x] Non YT Channel page
[x] Non YT Channel's claim page
[x] No channel (anonymous) claim page
[x] Various RENDER_MODES
