message: fix(reactivity):  shallowReactive should not unwrap refs
  fix
diff: @@ -181,7 +181,7 @@ export function defineReactive(
  }
  }
  }
  - return isRef(value) ? value.value : value
  + return isRef(value) && !shallow ? value.value : value
  },
  set: function reactiveSetter(newVal) {
  const value = getter ? getter.call(obj) : val
  