Fix(vue3): remove unecessary keys for v-if

[DorraJaouad]

☑️ Resolves

• Fix #12370

🏁 Checklist

• [ ] 🌏 Tested with Chrome, Firefox and Safari or should not be risky to browser differences
• [ ] 🖥️ Tested with Desktop client or should not be risky for it
• [ ] 🖌️ Design was reviewed, approved or inspired by the design team
• [ ] ⛑️ Tests are included or not possible
• [ ] 📗 User documentation in https://github.com/nextcloud/documentation/tree/master/user_manual/talk has been updated or is not required