Add missing AOSP module metadata to `ComposHostTestCases`.

This information is required to run this test module with the
following Atest syntax:

  atest ComposHostTestCases[com.android.art.apex]

Test: atest ComposHostTestCases[com.android.art.apex]
Bug: 258065512
Bug: 178703264
Change-Id: I80fd4c06bd6f9ce444b5aeb17cfd21c932a8acf2
diff --git a/compos/tests/AndroidTest.xml b/compos/tests/AndroidTest.xml
index 4b414f1..e35b874 100644
--- a/compos/tests/AndroidTest.xml
+++ b/compos/tests/AndroidTest.xml
@@ -15,6 +15,7 @@
 -->
 <configuration description="Tests for CompOS">
     <option name="config-descriptor:metadata" key="mainline-param" value="com.google.android.art.apex" />
+    <option name="config-descriptor:metadata" key="mainline-param" value="com.android.art.apex" />
 
     <!-- Only run tests if the device under test is SDK version 33 (Android 13) or above. -->
     <object type="module_controller"