[lensoverlay] Add IsAimM3Enabled check using aim_eligibility_service

Adds a check in Lens util file to check the AIM eligibility status from
the service. Updates the checks in lens_composebox_controller and
untrusted_ui to use this new check.

Bug: 439088299, 437157200
Change-Id: I6a2e9b4e8ac80971ced21e4cc6a1e61a8e140073
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6863196
Reviewed-by: Moe Ahmadi <mahmadi@chromium.org>
Commit-Queue: Jason Hu <hujasonx@google.com>
Reviewed-by: Duncan Mercer <mercerd@google.com>
Cr-Commit-Position: refs/heads/main@{#1505415}