[6.x] Fix nested Bard data loss when editing a set (#14808)

Author: joshuablum

resources/js/components/fieldtypes/bard/BardFieldtype.vue

@@ -442,6 +442,8 @@ export default {
         value(value, oldValue) {
             if (!this.editor) return;
 
+            if (document.activeElement?.closest('.bard-content')) return;
+
             const oldContent = this.editor.getJSON();
             const content = this.valueToContent(value);