Oncall for BUCK project xplat/js/react-native-github/BUCK (#35255)

Summary: Pull Request resolved: #35255

Reviewed By: huntie, cipolleschi

Differential Revision: D40460041

fbshipit-source-id: 8f3e37917646e3571398faf04be317c149b7a0ec

BUCK

@@ -29,6 +29,8 @@ load(
 )
 load("//tools/build_defs/third_party:yarn_defs.bzl", "yarn_workspace")
 
+oncall("react_native")
+
 RCTCXXBRIDGE_PUBLIC_HEADERS = {
     "React/" + x: "React/CxxBridge/" + x
     for x in [