Create parent stack before invoking super (#624)

Author: vinistock

lib/ruby_lsp/ruby_lsp_rails/rails_test_style.rb

@@ -52,10 +52,9 @@ def resolve_test_commands(items)
 
       #: (ResponseBuilders::TestCollection response_builder, GlobalState global_state, Prism::Dispatcher dispatcher, URI::Generic uri) -> void
       def initialize(response_builder, global_state, dispatcher, uri)
+        @parent_stack = [response_builder] #: Array[(Requests::Support::TestItem | ResponseBuilders::TestCollection)?]
         super(response_builder, global_state, dispatcher, uri)
 
-        @parent_stack = [@response_builder] #: Array[(Requests::Support::TestItem | ResponseBuilders::TestCollection)?]
-
         dispatcher.register(
           self,
           :on_class_node_enter,