[automerger skipped] Merge "Re-introduce debug.sf.latch_unsignaled" into sc-dev am: 623322a8 am: ec523137 am: 85e15150 -s ours

am skip reason: Merged-In I48c3095061dc106fa08d36b8ef17eccb04fb6eb1 with SHA-1 86c80e36 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/15004490

Change-Id: I2295a2f81ab21af4136956386cb7441bf294bb77