fix(editor): textarea not focusing in AI panel (#11429)

Closes: [BS-3006](https://linear.app/affine-design/issue/BS-3006/insider上面，圈选yuan素后，ad-hoc的ai对话框焦点控制有大问题（无法对焦，总是会跳走）)

blocksuite/framework/std/src/inline/range/active.ts

@@ -1,3 +1,5 @@
+import { RANGE_SYNC_EXCLUDE_ATTR } from './consts';
+
 /**
  * Check if the active element is in the editor host.
  * TODO(@mirone): this is a trade-off, we need to use separate awareness store for every store to make sure the selection is isolated.
@@ -8,6 +10,9 @@
 export function isActiveInEditor(editorHost: HTMLElement) {
   const currentActiveElement = document.activeElement;
   if (!currentActiveElement) return false;
+  // The input or textarea in the widget should be ignored.
+  if (currentActiveElement.closest(`[${RANGE_SYNC_EXCLUDE_ATTR}="true"]`))
+    return false;
   const currentEditorHost = currentActiveElement?.closest('editor-host');
   if (!currentEditorHost) return false;
   return currentEditorHost === editorHost;