Add a java host flag library for testing

Bug: 296465999
Test: use the flag
Change-Id: Id8de5f90d06647e020800aabf28bc67658dda331
Merged-In: Id8de5f90d06647e020800aabf28bc67658dda331
diff --git a/AconfigFlags.bp b/AconfigFlags.bp
index fc8b50c..9a80133 100644
--- a/AconfigFlags.bp
+++ b/AconfigFlags.bp
@@ -86,3 +86,11 @@
     aconfig_declarations: "android.security.flags-aconfig",
     defaults: ["framework-minus-apex-aconfig-java-defaults"],
 }
+
+java_aconfig_library {
+    name: "android.security.flags-aconfig-java-host",
+    aconfig_declarations: "android.security.flags-aconfig",
+    host_supported: true,
+    test: true,
+    defaults: ["framework-minus-apex-aconfig-java-defaults"],
+}