Issue #3431600: Automated Drupal 11 compatibility fixes for layout_builder_st

Closes #3431600

js/contextual.js

+(function ($) {
+  $(window).off('drupalContextualLinkAdded');
+
+  // Remove all contextual links outside the layout.
+  $(document).on('drupalContextualLinkAdded', (event, data) => {
+    const element = data.$el;
+    const contextualId = element.attr('data-contextual-id');
+    if (contextualId && !contextualId.startsWith('layout_builder_')) {
+      element.remove();
+    }
+  });
+})(jQuery);