Use original instead of immer draft for perf

Author: GeorchW

packages/toolkit/src/query/core/buildSlice.ts

@@ -32,7 +32,8 @@ import type {
  QueryDefinition,
 } from '../endpointDefinitions'
 import type { Patch } from 'immer'
-import { applyPatches } from 'immer'
+import { isDraft } from 'immer'
+import { applyPatches, original } from 'immer'
 import { onFocus, onFocusLost, onOffline, onOnline } from './setupListeners'
 import {
  isDocumentVisible,
@@ -208,7 +209,12 @@ export function buildSlice({
  // Assign or safely update the cache data.
  substate.data =
  definitions[meta.arg.endpointName].structuralSharing ?? true
- ? copyWithStructuralSharing(substate.data, payload)
+ ? copyWithStructuralSharing(
+ isDraft(substate.data)
+ ? original(substate.data)
+ : substate.data,
+ payload
+ )
  : payload
  }