[DataGrid] give empty row an id

[joriverm]

Pull Request

📖 Description

clicking in the empty content results in webcomponents to throw an error. this fixes it

🎫 Issues

2000

👩‍💻 Reviewer Notes

the datagrid tests seem to be skipped. is it ok that i didn't add a test?

📑 Test Plan

see issue

✅ Checklist

General

• [ ] I have added tests for my changes.
• [x] I have tested my changes.
• [ ] I have updated the project documentation to reflect my changes.
• [x] I have read the CONTRIBUTING documentation and followed the standards for this project.

Component-specific

• [ ] I have added a new component
• [ ] I have added Unit Tests for my new compontent
• [x] I have modified an existing component
• [x] I have validated the Unit Tests for an existing component

⏭ Next Steps

n/a

[vnbaaij]

Good catch. Thanks for reporting AND fixing!

[joriverm]

np! small mistake and easy fix, might as well make a PR then!