Add WiFi country code to Thread country code sources

Bug: b/309357909
Test: Run `atest ThreadNetworkUnitTests`.
Change-Id: I087cc0fc2b6c21fd9d3d4607f30c194214aeb37e
diff --git a/thread/tests/unit/Android.bp b/thread/tests/unit/Android.bp
index c7887bc..2523915 100644
--- a/thread/tests/unit/Android.bp
+++ b/thread/tests/unit/Android.bp
@@ -47,6 +47,7 @@
         "android.test.base",
         "android.test.runner",
         "ServiceConnectivityResources",
+        "framework-wifi",
     ],
     jarjar_rules: ":connectivity-jarjar-rules",
     jni_libs: [