Fix crash from asynchronous GPU metrics

Making the scope more accurate that only acquire the lock when trying
to access frame info in FrameInfoVisualizer, then make it irrelevant
to the real draw operation.

Bug: 317995179
Test: 1.going to developer options
      2. swapping the "profile hwui" option from "none" to "bars"
          and back a couple times, no crash

Change-Id: I069a28a7e847c0c3fca94fd9c43e95382f501b80
Merged-In: I069a28a7e847c0c3fca94fd9c43e95382f501b80