perf(reactivity): avoid triggering re-render if computed value did not change

packages/runtime-core/src/scheduler.ts

@@ -2,6 +2,10 @@ import { ErrorCodes, callWithErrorHandling } from './errorHandling'
 import { isArray } from '@vue/shared'
 import { ComponentInternalInstance, getComponentName } from './component'
 import { warn } from './warning'
+import { setComputedScheduler } from '@vue/reactivity'
+
+// set scheduler for computed
+setComputedScheduler(queueJob)
 
 export interface SchedulerJob extends Function {
   id?: number