chore: move refresh dbs button up to be inline

[betsybutton]

Description

Checklist

• New tests and/or benchmarks are included
• Documentation is changed or added
• If this change updates the UI, screenshots/videos are added and a design review is requested
• I have signed the MongoDB Contributor License Agreement (https://www.mongodb.com/legal/contributor-agreement)

Motivation and Context

• Bugfix
• New feature
• Dependency update
• Misc

This change responds to lots of user feedback we're heard that the refresh button should not be buried under the ... menu.

Dependents

N/a

Types of changes

• Backport Needed
• Patch (non-breaking change which fixes an issue)
• Minor (non-breaking change which adds functionality)
• Major (fix or feature that would cause existing functionality to change)

[lerouxb]

You need either a ticket number in the title or the no-title-validation tag on the PR for the Check PR Title task to succeed, btw.

CI seems to be very red right now, probably due to https://www.electronjs.org/blog/ecosystem-node-22/

[gribnoysup]

Merged main to see if there are any actual test failures