Reland of 🍵 Refactor the various locale_paks() templates to be more shared

ios/chrome/share_extension/BUILD.gn

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/locales.gni")
 import("//ios/chrome/extension_repack.gni")
 
 group("resources") {
   deps = [
     "//ios/chrome/share_extension/strings",
   ]
 }
 
 extension_repack_all_locales("packed_resources") {
-  copy_data_to_bundle = false
   extension = "share_extension"
   input_locales = ios_packed_locales
   output_locales = ios_packed_locales_as_mac_outputs
 }