fix: workspace unit setBlocksuiteWorkspace support null

packages/data-center/src/workspace-unit.ts

@@ -42,7 +42,7 @@ export class WorkspaceUnit {
   }
 
   setBlocksuiteWorkspace(blocksuiteWorkspace: BlocksuiteWorkspace | null) {
-    if (blocksuiteWorkspace?.room !== this.id) {
+    if (blocksuiteWorkspace && blocksuiteWorkspace?.room !== this.id) {
       throw new Error('Workspace id inconsistent.');
     }
     this._blocksuiteWorkspace = blocksuiteWorkspace;