Merge branch 'feat/watch-source-enhance' of https://github.com/ArthurDarkstone/vue-core into feat/watch-source-enhance

Author: ArthurDarkstone

packages/runtime-core/src/componentOptions.ts

@@ -852,7 +852,7 @@ export function createWatcher(
 ): void {
   let getter = key.includes('.')
     ? createPathGetter(publicThis, key)
-    : () => (publicThis)[key as keyof typeof publicThis]
+    : () => publicThis[key as keyof typeof publicThis]
 
   const options: WatchOptions = {}
   if (__COMPAT__) {