vue/require-default-prop: false positive when pass withDefaults argument by reference

[tilonorrinco]

Checklist

• I have tried restarting my IDE and the issue persists.
• I have read the FAQ and my problem is not listed.

Tell us about your environment

• ESLint version: 9.39.1
• eslint-plugin-vue version: 10.5.1
• Vue version: 3.5.25
• Node version: 24.11.1
• Operating System: Windows 10 pro 22H2

Please show your full configuration:

import { globalIgnores } from 'eslint/config'
import { defineConfigWithVueTs, vueTsConfigs } from '@vue/eslint-config-typescript'
import pluginVue from 'eslint-plugin-vue'

export default defineConfigWithVueTs(
  {
    name: 'app/files-to-lint',
    files: ['**/*.{ts,mts,tsx,vue}'],
  },

  globalIgnores(['**/dist/**', '**/dist-ssr/**', '**/coverage/**']),

  pluginVue.configs['flat/recommended'],
  vueTsConfigs.recommended,
)

What did you do?

<script setup lang="ts">
defineOptions({ name: 'ExampleComponent' });

interface Props {
  optionalProp?: string;
}

const defaultsObj = {
  optionalProp: 'hello!',
}

withDefaults(defineProps<Props>(), defaultsObj);
</script>

What did you expect to happen?
No "vue/require-default-prop" error for "optionalProp"

What actually happened?

**\src\ExampleComponent.vue
5:3 warning Prop 'optionalProp' requires default value to be set vue/require-default-prop

✖ 1 problem (0 errors, 1 warning)

Repository to reproduce this issue

https://github.com/tilonorrinco/bug-vue-require-default-prop

Thanks in advance!