Disabling testPredictionExistsInAllApps

It fails in the lab, and locally, when being run as a part of the whole
test suite.

Bug: 131772711
Change-Id: Ida5f384eb7115303e1315928822566150e1d852c
diff --git a/quickstep/tests/src/com/android/quickstep/AppPredictionsUITests.java b/quickstep/tests/src/com/android/quickstep/AppPredictionsUITests.java
index e028fcd..1817135 100644
--- a/quickstep/tests/src/com/android/quickstep/AppPredictionsUITests.java
+++ b/quickstep/tests/src/com/android/quickstep/AppPredictionsUITests.java
@@ -85,6 +85,7 @@
      * Test that prediction UI is updated as soon as we get predictions from the system
      */
     @Test
+    @Ignore // b/131772711: this really fails (when being run as a part of the whole test suite)!
     public void testPredictionExistsInAllApps() {
         mActivityMonitor.startLauncher();
         mLauncher.pressHome().switchToAllApps();
@@ -117,7 +118,7 @@
     }
 
     @Test
-    @Ignore
+    @Ignore // b/131772711 - this was failing in the lab
     public void testPredictionsDisabled() {
         mActivityMonitor.startLauncher();
         sendPredictionUpdate();