Checklist

• I have tried restarting my IDE and the issue persists.
• I have read theFAQ 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'importpluginVuefrom'eslint-plugin-vue'exportdefaultdefineConfigWithVueTs({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' });interfaceProps {  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!