Fix tooltip glitch

[daniel-wer]

... by providing a key attribute. As far as I can see, React got confused and reused the same tooltip after the Edit button was clicked (to render the Save ... tooltip) which is why the tooltip stayed open, but was moved to the side. Therefore, the mouseleave or whatever other necessary event was not received. Providing a key solves this issue.

URL of deployed dev instance (used for testing):

• https://___.webknossos.xyz

Steps to test:

• Click Edit annotation name in the annotation list, then click save or press enter -> The tooltip should be gone as expected.

Issues:

• fixes UI glitch: tooltips persist  #4799

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• Updated (unreleased) changelog
• Updated (unreleased) migration guide if applicable
• Updated documentation if applicable
• Adapted wk-connect if datastore API changes
• Needs datastore update after deployment
• Ready for review

[philippotto]

Awesome fix :)