Disable initialization table pipeline for new merge request form

Closes #31052

app/views/projects/merge_requests/_new_submit.html.haml

@@ -46,7 +46,7 @@
         -# This tab is always loaded via AJAX
       - if @pipelines.any?
         #pipelines.pipelines.tab-pane
-          = render 'projects/merge_requests/show/pipelines', endpoint: url_for(params.merge(format: :json))
+          = render 'projects/merge_requests/show/pipelines', endpoint: url_for(params.merge(format: :json)), disable_initialization: true
 
   .mr-loading-status
     = spinner

app/views/projects/merge_requests/show/_pipelines.html.haml

 - endpoint_path = local_assigns[:endpoint] || pipelines_namespace_project_merge_request_path(@project.namespace, @project, @merge_request, format: :json)
+- disable_initialization = local_assigns.fetch(:disable_initialization, false)
 
-= render 'projects/commit/pipelines_list', endpoint: endpoint_path
+= render 'projects/commit/pipelines_list', endpoint: endpoint_path, disable_initialization: disable_initialization