Add javadoc to compat-ids

Flag: EXEMPT host test change only
Bug: 367706429
Test: $ANDROID_BUILD_TOP/frameworks/base/ravenwood/scripts/run-ravenwood-tests.sh
Change-Id: Ic0f2de04a6289b86f14752e8cfb2931dd458a34f
diff --git a/core/java/com/android/internal/ravenwood/RavenwoodEnvironment.java b/core/java/com/android/internal/ravenwood/RavenwoodEnvironment.java
index 3303d87..8df3f2a 100644
--- a/core/java/com/android/internal/ravenwood/RavenwoodEnvironment.java
+++ b/core/java/com/android/internal/ravenwood/RavenwoodEnvironment.java
@@ -88,15 +88,19 @@
     /** @hide */
     public static class CompatIdsForTest {
         // Enabled by default
+        /** Used for testing */
         @ChangeId
         public static final long TEST_COMPAT_ID_1 = 368131859L;
 
+        /** Used for testing */
         @Disabled
         @ChangeId public static final long TEST_COMPAT_ID_2 = 368131701L;
 
+        /** Used for testing */
         @EnabledAfter(targetSdkVersion = S)
         @ChangeId public static final long TEST_COMPAT_ID_3 = 368131659L;
 
+        /** Used for testing */
         @EnabledAfter(targetSdkVersion = UPSIDE_DOWN_CAKE)
         @ChangeId public static final long TEST_COMPAT_ID_4 = 368132057L;
     }