Remove last transition info after it is logged

Otherwise if the activity calls Activity#reportFullyDrawn every
time after it is created, the metrics will be reported again
with unexpected values if it is relaunched, e.g. rotation change.

Bug: 123355661
Test: No "Fully drawn" log by activity relaunched
Change-Id: I16bd816c8f0af8c28c2b2ac38994d9daa9c0ba96

services/core/java/com/android/server/wm/ActivityMetricsLogger.java

@@ -978,6 +978,7 @@ class ActivityMetricsLogger {
         final TransitionInfoSnapshot infoSnapshot =
                 new TransitionInfoSnapshot(info, r, (int) startupTimeMs);
         BackgroundThread.getHandler().post(() -> logAppFullyDrawn(infoSnapshot));
+        mLastTransitionInfo.remove(r);
 
         if (!info.isInterestingToLoggerAndObserver()) {
             return infoSnapshot;