Add back @project.reset

as per comment: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/53065#note_506604680

app/controllers/projects_controller.rb

@@ -95,6 +95,7 @@ class ProjectsController < Projects::ApplicationController
       redirect_to(edit_project_path(@project, anchor: 'js-general-project-settings'))
     else
       flash[:alert] = result[:message]
+      @project.reset
       render 'edit'
     end