message: fix: avoid warning when accessing _setupProxy
diff: @@ -64,7 +64,7 @@ export function prefixIdentifiers(
  s.prependRight(
  node.start!,
  `var _vm=this,_c=_vm._self._c${
  - isScriptSetup ? `,_setup=_vm._setupProxy;` : `;`
  + isScriptSetup ? `,_setup=_vm._self._setupProxy;` : `;`
  }`
  )
  }
  