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

This reverts commit c62d79ab14.

packages/common/infra/src/sync/doc/old-id.md

@@ -1,24 +0,0 @@
-AFFiNE currently has a lot of data stored using the old ID format. Here, we record the usage of IDs to avoid forgetting.
-
-## Old ID Format
-
-The format is:
-
-- `{workspace-id}:space:{nanoid}` Common
-- `{workspace-id}:space:page:{nanoid}`
-
-> Note: sometimes the `workspace-id` is not same with current workspace id.
-
-## Usage
-
-- Local Storage
-  - indexeddb: Both new and old IDs coexist
-  - sqlite: Both new and old IDs coexist
-  - server-clock: Only new IDs are stored
-  - sync-metadata: Both new and old IDs coexist
-- Server Storage
-  - Only stores new IDs but accepts writes using old IDs
-- Protocols
-  - When the client submits an update, both new and old IDs are used.
-  - When the server broadcasts updates sent by other clients, both new and old IDs are used.
-  - When the server responds to `client-pre-sync` (listing all updated docids), only new IDs are used.