Revert "feat(core): run indexer in worker (#7295)"

This reverts commit c62d79ab14.

packages/common/infra/src/sync/blob/blob.ts

@@ -4,7 +4,6 @@ import { difference } from 'lodash-es';
 
 import { LiveData } from '../../livedata';
 import type { Memento } from '../../storage';
-import { MANUALLY_STOP } from '../../utils';
 import { BlobStorageOverCapacity } from './error';
 
 const logger = new DebugLogger('affine:blob-engine');
@@ -71,7 +70,7 @@ export class BlobEngine {
   }
 
   stop() {
-    this.abort?.abort(MANUALLY_STOP);
+    this.abort?.abort();
     this.abort = null;
   }