Remove unnecessary separator in version dropdown

[berekuk]

Before:

After:

(we don't use separators after menu headers anymore since we added colored backgrounds in headers)

[changeset-bot]

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Latest commit: c900343

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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