Finish sync for relayout a drawn window

An activity may change visibility in a short time as visible
-> invisible -> visible without reset drawn state. E.g. scene
transition convert to translucent. Then if its window relayout
to clear mRedrawForSyncReported, the window will stuck by
SYNC_STATE_WAITING_FOR_DRAW until it becomes invisible or timeout.

This also relates to non-sync blast so maybeSyncSeqId is -1 then
the window won't report drawn.

Bug: 260093427
Test: Enable shell transition.
      Launch Messages and click its search bar.
      There should be fade out/in animation for activity switch.
Change-Id: I49746b56e7dda76c530366663000b0d11ae779f3

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

@@ -2587,6 +2587,12 @@ public class WindowManagerService extends IWindowManager.Stub
                         && win.mSyncSeqId > lastSyncSeqId) {
                     maybeSyncSeqId = win.shouldSyncWithBuffers() ? win.mSyncSeqId : -1;
                     win.markRedrawForSyncReported();
+                    if (win.mSyncState == WindowContainer.SYNC_STATE_WAITING_FOR_DRAW
+                            && winAnimator.mDrawState == WindowStateAnimator.HAS_DRAWN
+                            && maybeSyncSeqId < 0) {
+                        // Do not wait for a drawn window which won't report draw.
+                        win.onSyncFinishedDrawing();
+                    }
                 } else {
                     maybeSyncSeqId = -1;
                 }