Disable failing PIP expand assertion

The PIP layer shrinks for 1 frame while expanding (flaky)

Bug: 197726610
Test: atest WMShellFlickerTests
Change-Id: Ibc27fe345722223f6dd29277f5d70abff8ab5a89

libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/pip/ExitPipViaIntentTest.kt

@@ -25,6 +25,8 @@ import com.android.server.wm.flicker.FlickerTestParameter
 import com.android.server.wm.flicker.FlickerTestParameterFactory
 import com.android.server.wm.flicker.annotation.Group3
 import com.android.server.wm.flicker.dsl.FlickerBuilder
+import com.android.server.wm.flicker.helpers.isShellTransitionsEnabled
+import org.junit.Assume
 import org.junit.FixMethodOrder
 import org.junit.Test
 import org.junit.runner.RunWith
@@ -81,9 +83,19 @@ class ExitPipViaIntentTest(testSpec: FlickerTestParameter) : ExitPipToAppTransit
     override fun statusBarLayerRotatesScales() = super.statusBarLayerRotatesScales()
 
     /** {@inheritDoc}  */
+    @FlakyTest(bugId = 197726610)
+    @Test
+    override fun pipLayerExpands() {
+        Assume.assumeFalse(isShellTransitionsEnabled)
+        super.pipLayerExpands()
+    }
+
     @Presubmit
     @Test
-    override fun pipLayerExpands() = super.pipLayerExpands()
+    fun pipLayerExpands_ShellTransit() {
+        Assume.assumeTrue(isShellTransitionsEnabled)
+        super.pipLayerExpands()
+    }
 
     companion object {
         /**