Revert^2 "Mark @FlaggedApi flags as exported"

322dd88f9dedd580115bd62377c2a21323540d2f

Change-Id: I9d1b06d9bea270e22f364bbc4be24174d3ae53fe
diff --git a/services/autofill/features.aconfig b/services/autofill/features.aconfig
index 5703633..80e0e5d 100644
--- a/services/autofill/features.aconfig
+++ b/services/autofill/features.aconfig
@@ -6,6 +6,7 @@
   namespace: "autofill"
   description: "Guards against new metrics definitions introduced in W"
   bug: "342676602"
+  is_exported: true
 }
 
 flag {