fixed modal submit on enter

[NADEE-MJ]

Checklist

• [ ] DO add tests (Frontend: Vite and Playwright / Backend: Pytest) if your PR resolves an issue or adds a new feature.
• [x] DO ensure code compiles correctly
• [ ] DO document new changes in README / documentation, if necessary
• [x] DO keep pull requests small so they can be easily reviewed.
• [x] DO make sure tests pass (Frontend: npm run test & npm run test:unit / Backend: prta)
• [x] DO make sure code is linted (Frontend: npm run format & npm run lint & npm run check / Backend: prla).
• [x] DO make sure not to introduce any compiler warnings.
• [ ] AVOID making significant changes to the API's overall architecture.

Please check the type of change your PR introduces

• [ ] Bugfix
• [x] New Feature/Code
• [ ] Code style update (formatting, renaming)
• [ ] Documentation content changes
• [ ] Other (please describe):