Fix "ERR value is not an integer or out of range" errors

`ActiveSupport::Cache::RedisCacheStore` is not compatible with the
version of Rack Attack we are using (v4.4.1) per
https://github.com/kickstarter/rack-attack/issues/281. Users that had
rate limits enabled might see `Redis::CommandError: ERR value is not an
integer or out of range` because the `raw` parameter wasn't passed along
properly. As a result, the Rack Attack entry would be stored as an
`ActiveSupport::Cache::Entry` instead of a raw string holding an integer
value.

Let's partially revert the change in
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/30966 to use the
original cache store until we can update to Rack Attack v5.2.3 that has
support for `ActiveSupport::Cache::RedisCacheStore` via
https://github.com/kickstarter/rack-attack/pull/350.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/66449

changelogs/unreleased/sh-revert-redis-cache-store.yml

+---
+title: Fix "ERR value is not an integer or out of range" errors
+merge_request: 32126
+author:
+type: fixed

config/application.rb

@@ -241,10 +241,7 @@ module Gitlab
     end
 
     # Use caching across all environments
-    # Full list of options:
-    # https://api.rubyonrails.org/classes/ActiveSupport/Cache/RedisCacheStore.html#method-c-new
     caching_config_hash = Gitlab::Redis::Cache.params
-    caching_config_hash[:compress] = false
     caching_config_hash[:namespace] = Gitlab::Redis::Cache::CACHE_NAMESPACE
     caching_config_hash[:expires_in] = 2.weeks # Cache should not grow forever
     if Sidekiq.server? # threaded context
@@ -252,7 +249,7 @@ module Gitlab
       caching_config_hash[:pool_timeout] = 1
     end
 
-    config.cache_store = :redis_cache_store, caching_config_hash
+    config.cache_store = :redis_store, caching_config_hash
 
     config.active_job.queue_adapter = :sidekiq