Verifying that workspace looks correct at the end of the test.

I hope that this will lock bugs like b/298114205 in the test that created the bad condition, not the next one.

Bug: 298114205
Test: presubmit
Flag: N/A
Change-Id: If9b48fb5159fc35948607a99f87199d5a32e64d6
diff --git a/tests/Android.bp b/tests/Android.bp
index 654edad..d828fdf 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -58,6 +58,7 @@
       "src/com/android/launcher3/util/rule/SamplerRule.java",
       "src/com/android/launcher3/util/rule/ScreenRecordRule.java",
       "src/com/android/launcher3/util/rule/ShellCommandRule.java",
+      "src/com/android/launcher3/util/rule/TestIsolationRule.java",
       "src/com/android/launcher3/util/rule/TestStabilityRule.java",
       "src/com/android/launcher3/util/rule/TISBindRule.java",
       "src/com/android/launcher3/util/viewcapture_analysis/*.java",