Annotate CtsPackageWatchdogTestCases for foldable testing

The tests do not rely on foldable states, so marking "no_foldable_states"

Change-Id: I4bbf656166e2e4ccfb9ab7b6b2e965ad5d516b4b
Test: N/A
Bug: 197815620
diff --git a/tests/tests/packagewatchdog/AndroidTest.xml b/tests/tests/packagewatchdog/AndroidTest.xml
index 23113be..94b1390 100644
--- a/tests/tests/packagewatchdog/AndroidTest.xml
+++ b/tests/tests/packagewatchdog/AndroidTest.xml
@@ -19,6 +19,7 @@
     <option name="config-descriptor:metadata" key="parameter" value="multi_abi" />
     <option name="config-descriptor:metadata" key="parameter" value="not_instant_app" />
     <option name="config-descriptor:metadata" key="parameter" value="secondary_user" />
+    <option name="config-descriptor:metadata" key="parameter" value="no_foldable_states" />
     <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
         <option name="cleanup-apks" value="true" />
         <option name="test-file-name" value="CtsPackageWatchdogTestCases.apk" />