fix: pause MembersList auto-refresh during project dialog interaction

Stop auto-refresh when MeetingProjectDialog opens and resume when it closes
to prevent UI conflicts during project selection.

src/views/OnboardMeetingSetupView.vue

@@ -276,6 +276,8 @@
       :notify="$notify"
       :load-more-callback="handleLoadMoreProjects"
       @assign="handleProjectLinkAssigned"
+      @open="handleDialogOpen"
+      @close="handleDialogClose"
     />
 
     <!-- Members Section -->
@@ -308,6 +310,7 @@
       </ul>
 
       <MembersList
+        ref="membersList"
         :password="currentMeeting.password || ''"
         :show-organizer-tools="true"
         class="mt-4"
@@ -915,5 +918,25 @@ export default class OnboardMeetingView extends Vue {
       this.newOrUpdatedMeetingInputs.projectLink = "";
     }
   }
+
+  /**
+   * Handle dialog open event - stop auto-refresh in MembersList
+   */
+  handleDialogOpen(): void {
+    const membersList = this.$refs.membersList as MembersList;
+    if (membersList) {
+      membersList.stopAutoRefresh();
+    }
+  }
+
+  /**
+   * Handle dialog close event - start auto-refresh in MembersList
+   */
+  handleDialogClose(): void {
+    const membersList = this.$refs.membersList as MembersList;
+    if (membersList) {
+      membersList.startAutoRefresh();
+    }
+  }
 }
 </script>