on moving a space from subspace, or subspace to subspace, set space is null

src/space/services/subspace/subspace-device.service.ts

@@ -84,7 +84,7 @@ export class SubspaceDeviceService {
       if (device.tag?.subspace?.uuid !== subspace.uuid) {
         await this.tagRepository.update(
           { uuid: device.tag.uuid },
-          { subspace },
+          { subspace, space: null },
         );
       }