[chromebox_for_meetings] Enable hotlog2; gate on switch

Bug: b:338599950
Change-Id: Iaf5459940386064cc7f7aaaab7726cb3cebc2309
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5594589


Reviewed-by: Kyle Williams <kdgwill@chromium.org>
Commit-Queue: Niko Tsirakis <ntsirakis@google.com>
Cr-Commit-Position: refs/heads/main@{#1312823}