mountSuspended with script setup throws mutation warning

[SokolovskyiAnton]

Environment

• Operating System: Linux
• Node Version: v22.14.0
• CLI Version: 3.27.0
• Nitro Version: 2.12.4
• Package Manager: npm@11.4.1
• nuxt Version: 4.0.2
• @nuxt/test-utils: ^3.19.2
• vitest: ^3.2.4
• @vue/test-utils: ^2.4.6
• vue: ^3.5.17

Reproduction

<script setup lang="ts">
const { error = false } = defineProps<{ error?: boolean }>()
</script>

### Describe the bug

When testing Nuxt components written using `<script setup>` and destructured `defineProps()`, calling `wrapper.setProps(...)` causes a Vue runtime warning and the test fails.


### Additional context

_No response_

### Logs

```shell-script
[Vue warn]: Cannot mutate <script setup> binding "error" from Options API.