fix(useMemoize): use shallowReactive to wrap Map

vuejs/core#8960

packages/core/useMemoize/index.ts

@@ -1,5 +1,5 @@
 import { hasOwn } from '@vueuse/shared'
-import { del, isVue2, reactive, set } from 'vue-demi'
+import { del, isVue2, set, shallowReactive } from 'vue-demi'
 
 type CacheKey = any
 
@@ -33,7 +33,7 @@ export interface UseMemoizeCache<Key, Value> {
  * Fallback for Vue 2 not able to make a reactive Map
  */
 function getMapVue2Compat<Value>(): UseMemoizeCache<CacheKey, Value> {
-  const data: Record<CacheKey, Value> = reactive({})
+  const data: Record<CacheKey, Value> = shallowReactive({})
   return {
     get: key => data[key],
     set: (key, value) => set(data, key, value),
@@ -91,11 +91,11 @@ export function useMemoize<Result, Args extends unknown[]>(
 ): UseMemoizeReturn<Result, Args> {
   const initCache = (): UseMemoizeCache<CacheKey, Result> => {
     if (options?.cache)
-      return reactive(options.cache)
+      return shallowReactive(options.cache)
     // Use fallback for Vue 2 not able to make a reactive Map
     if (isVue2)
       return getMapVue2Compat<Result>()
-    return reactive(new Map<CacheKey, Result>())
+    return shallowReactive(new Map<CacheKey, Result>())
   }
   const cache = initCache()