FIX: Ensure that post action moderation post uses the site's default locale.

https://meta.discourse.org/t/a-post-in-looking-for-someone-to-customize-discourse-to-create-a-forum-site-requires-staff-attention/67468/5?u=tgxworld

spec/controllers/admin/flags_controller_spec.rb

@@ -1,36 +0,0 @@
-require 'rails_helper'
-
-describe Admin::FlagsController do
-
-  it "is a subclass of AdminController" do
-    expect(Admin::FlagsController < Admin::AdminController).to eq(true)
-  end
-
-  context 'while logged in as an admin' do
-    before do
-      @user = log_in(:admin)
-    end
-
-    context 'index' do
-      it 'returns empty json when nothing is flagged' do
-        xhr :get, :index
-
-        data = ::JSON.parse(response.body)
-        expect(data["users"]).to eq([])
-        expect(data["posts"]).to eq([])
-      end
-
-      it 'returns a valid json payload when some thing is flagged' do
-        p = Fabricate(:post)
-        u = Fabricate(:user)
-
-        PostAction.act(u, p, PostActionType.types[:spam])
-        xhr :get, :index
-
-        data = ::JSON.parse(response.body)
-        data["users"].length == 2
-        data["posts"].length == 1
-      end
-    end
-  end
-end