Merge "Make sure TAPL waits for Launcher activity to stop each time it stops" into main

tests/multivalentTests/shared/com/android/launcher3/testing/shared/TestProtocol.java

@@ -178,6 +178,9 @@ public final class TestProtocol {
     public static final String REQUEST_UNSTASH_BUBBLE_BAR_IF_STASHED =
             "unstash-bubble-bar-if-stashed";
 
+    public static final String REQUEST_GET_AND_RESET_ACTIVITY_STOP_COUNT =
+            "get-and-reset-activity-stops";
+
     /** Logs {@link Log#d(String, String)} if {@link #sDebugTracing} is true. */
     public static void testLogD(String tag, String message) {
         if (!sDebugTracing) {