Revert "Enable "modern" BroadcastQueue by default."

Revert submission 20235046-oct20

Reason for revert: Potentially breaking QsMediacontroller test. Part of Droidmonitor+Platinum rotatiod, will not be submitted with testing.

Bug: 254769026
Reverted Changes:
I3424da036:BroadcastQueue: misc fixes before dogfooding.
Idcc7f7c93:Enable "modern" BroadcastQueue by default.

Change-Id: I75781750c95531d06a42ab8c2ecb230922baada2