Disabling strict activity leak check more aggressively than in ag/25340909

That CL wasn't sufficient, still seeing:
https://android-build.corp.google.com/test_investigate/?blocking=warning&invocationId=I37300010216048087&status=none&testResultId=TR78329041431354974

Bug: 187761685
Test: presubmit
Flag: N/A
Change-Id: I36979a8929ccb996b81e8d41ec75b9713258c1c3

tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java

@@ -122,7 +122,10 @@ public abstract class AbstractLauncherUiTest {
 
     /** Detects activity leaks and throws an exception if a leak is found. */
     public static void checkDetectedLeaks(LauncherInstrumentation launcher,
-            boolean requireOneActiveActivity) {
+            boolean requireOneActiveActivityUnused) {
+        final boolean requireOneActiveActivity =
+                false; // workaround for leaks when there is an unexpected Recents activity
+
         if (sActivityLeakReported) return;
 
         // Check whether activity leak detector has found leaked activities.