Replace targetSDK check with platform compat framework gating.

Define a new change id and use it for gating the change.

Test: atest -p cts/tests/signature, atest AndroidTestBaseUpdaterTest
Bug: 30188076
Change-Id: Ic8c85eae0c490a7eca117b74c4326dd50df2b352
diff --git a/Android.bp b/Android.bp
index 5250dc5..a106168 100644
--- a/Android.bp
+++ b/Android.bp
@@ -426,7 +426,7 @@
 
 java_library {
     name: "framework-annotation-proc",
-    defaults: ["framework-defaults"],
+    defaults: ["framework-aidl-export-defaults"],
     srcs: [":framework-all-sources"],
     installable: false,
     plugins: [