chore: prohibit import package itself (#2612)

Co-authored-by: Whitewater <me@waterwater.moe>

packages/workspace/src/blob/index.ts

@@ -1,9 +1,10 @@
-import type { createWorkspaceApis } from '@affine/workspace/affine/api';
 import type { BlobStorage } from '@blocksuite/store';
 import { createIndexeddbStorage } from '@blocksuite/store';
 import { openDB } from 'idb';
 import type { DBSchema } from 'idb/build/entry';
 
+import type { createWorkspaceApis } from '../affine/api';
+
 type UploadingBlob = {
   key: string;
   arrayBuffer: ArrayBuffer;