Move #set_user to Admin::BaseController (#9470)

* Move #set_user to Admin::BaseController

* Rename Admin::TwoFactorAuthenticationsController

from `#set_user` to `#set_target_user` .

app/controllers/admin/two_factor_authentications_controller.rb

@@ -2,7 +2,7 @@
 
 module Admin
   class TwoFactorAuthenticationsController < BaseController
-    before_action :set_user
+    before_action :set_target_user
 
     def destroy
       authorize @user, :disable_2fa?
@@ -13,7 +13,7 @@ module Admin
 
     private
 
-    def set_user
+    def set_target_user
       @user = User.find(params[:user_id])
     end
   end