Setup

• Rancher version: head (2.11)
• Rancher UI Extensions:
• Browser type & version: Firefox 135.0.1

Describe the bug

Cannot remove annotations after adding them on imported k3s and rke2 clusters.

Found when testing #9476

To Reproduce

Can be reproduced with either local cluster or an imported cluster. Steps for local cluster:

1. Setup rancher on k3s or rke2
2. Edit local cluster config
3. Add an annotation with a key and value
4. Try to remove the annotation using the "Remove" button on the right, either before or after saving

Result
Cannot remove the annotation.

Note that there is a workaround by removing the text inside of the annotation, then clicking the remove button.

Expected Result

Annotation should be removed without having to clear the text first.

Screenshots

Additional context

If there are multiple "empty" annotations, then clicking one remove button will remove all of them. This is a separate issue, and I do not view that bit as a bug personally. I am calling it out here because it can feel a bit weird and lead to a degraded UX -- for example, if I know I want to add 5 annotations, then accidentally click the button 6 times, then try to remove one empty field, it will remove all of them and I'll have to click the button 5 times on my second attempt.

Note that in frustration, when I clicked 4 or 5 times in quick succession on the Remove button, I was able to remove an annotation.