Fix more ActivityPub queries setting cookies and preventing caching (#11557)

app/controllers/follower_accounts_controller.rb

@@ -7,6 +7,8 @@ class FollowerAccountsController < ApplicationController
   before_action :require_signature!, if: -> { request.format == :json && authorized_fetch_mode? }
   before_action :set_cache_headers
 
+  skip_around_action :set_locale, if: -> { request.format == :json }
+
   def index
     respond_to do |format|
       format.html do

app/controllers/following_accounts_controller.rb

@@ -7,6 +7,8 @@ class FollowingAccountsController < ApplicationController
   before_action :require_signature!, if: -> { request.format == :json && authorized_fetch_mode? }
   before_action :set_cache_headers
 
+  skip_around_action :set_locale, if: -> { request.format == :json }
+
   def index
     respond_to do |format|
       format.html do