Add default_visibility for soong modules

So that we don't get surprise usages.

Bug: 348717861
Test: m nothing
Change-Id: I47319a727092c1bd936cca88f5713ee977a48b48
diff --git a/android/team_proto/Android.bp b/android/team_proto/Android.bp
index 7e2a4c1..5faaaf1 100644
--- a/android/team_proto/Android.bp
+++ b/android/team_proto/Android.bp
@@ -40,4 +40,8 @@
     proto: {
         canonical_path_from_root: false,
     },
+    visibility: [
+        "//build/soong:__subpackages__",
+        "//tools/asuite/team_build_scripts",
+    ],
 }