fix(types): keep the original type when unwrapping markRaw (#3791)

packages/reactivity/src/ref.ts

@@ -12,6 +12,7 @@ import { CollectionTypes } from './collectionHandlers'
 import { createDep, Dep } from './dep'
 
 declare const RefSymbol: unique symbol
+export declare const RawSymbol: unique symbol
 
 export interface Ref<T = any> {
   value: T
@@ -291,6 +292,7 @@ export type UnwrapRefSimple<T> = T extends
   | BaseTypes
   | Ref
   | RefUnwrapBailTypes[keyof RefUnwrapBailTypes]
+  | { [RawSymbol]?: true }
   ? T
   : T extends Array<any>
   ? { [K in keyof T]: UnwrapRefSimple<T[K]> }