Assign the right oncall with best guess to miscellaneous xplat test modules

Summary:
We try to remove the use test_ownership_2020 oncall, which was created to enforce oncall field in test module. This diff stack tries its best to guess who the right oncall is for these "unowned" tests.

If you don't think this belongs to you, please
1. Either re-assign to another team to your best knowledge
2. Or delete the test

Every test should have an owner!

Differential Revision: D36404812

fbshipit-source-id: daf57e860d3700928ae4518897d87247a672eae4

ReactAndroid/src/test/java/com/facebook/react/util/BUCK

@@ -3,7 +3,7 @@ load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_tar
 rn_robolectric_test(
     name = "util",
     srcs = glob(["**/*.java"]),
-    contacts = ["oncall+test_ownership_2020@xmail.facebook.com"],
+    contacts = ["oncall+react_native@xmail.facebook.com"],
     visibility = [
         "PUBLIC",
     ],