feat(remote-config): remove the remote config session kill switch (#7524)

* Remove remote config kill switch

# Conflicts:
#	Sources/Checkpoints/CheckpointWorkflowResolver.swift
#	Tests/UnitTests/Checkpoints/CheckpointWorkflowResolverTests.swift

* Improve remote config retry tests

* feat(remote-config): stop decoding offering paywall components

* test(remote-config): align workflow integration test naming

* refactor(remote-config): limit offerings preview APIs to debug builds

* refactor(remote-config): address review cleanup

* fix(remote-config): propagate workflow fetch failures

* refactor(remote-config): derive paywall components from decoding mode

* Remove offerings paywall component decoding

* Update offerings component decoding tests

* Fix CI test fixture compilation

* Fix offerings initializer argument order

* Preserve default offerings component marker

Sources/Networking/HTTPClient/HTTPClient.swift

@@ -864,12 +864,6 @@ private extension HTTPClient {
                                                                          serverErrorURL: serverErrorURL))
             urlRequest = URLRequest(url: serverErrorURL)
 
-        case let .appendQueryItems(queryItems):
-            Logger.warn(Strings.network.api_request_appending_query_items(request.httpRequest, queryItems: queryItems))
-            if let url = urlRequest.url?.appendingQueryItems(queryItems) {
-                urlRequest.url = url
-            }
-
         case .performRequest:
             break
         }