fix(types): fix shallowRef type error

Author: Alfred-Skyblue

Diff for: src/v3/reactivity/ref.ts

@@ -51,9 +51,13 @@ declare const ShallowRefMarker: unique symbol
 
 export type ShallowRef<T = any> = Ref<T> & { [ShallowRefMarker]?: true }
 
-export function shallowRef<T>(value: T | Ref<T>): Ref<T> | ShallowRef<T>
-export function shallowRef<T extends Ref>(value: T): T
-export function shallowRef<T>(value: T): ShallowRef<T>
+export function shallowRef<T>(
+  value: T
+): Ref extends T
+  ? T extends Ref
+    ? IfAny<T, ShallowRef<T>, T>
+    : ShallowRef<T>
+  : ShallowRef<T>
 export function shallowRef<T = any>(): ShallowRef<T | undefined>
 export function shallowRef(value?: unknown) {
   return createRef(value, true)