Reduce unnecessary screenshot when display is not on

The transition is not visible so a screenshot is not needed.

Bug: 281067141
Test: Trigger config change when screen is off
Change-Id: Ia6dcee6f147675f5170830d63c9ffa3263e3cb13

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

@@ -691,6 +691,7 @@ class Transition implements BLASTSyncEngine.TransactionReadyListener {
         if (!wc.mDisplayContent.getDisplayPolicy().isScreenOnFully()
                 || wc.mDisplayContent.getDisplayInfo().state == Display.STATE_OFF) {
             mFlags |= WindowManager.TRANSIT_FLAG_INVISIBLE;
+            return;
         }
 
         if (mContainerFreezer == null) {