Prevent bottom dock from becoming too large or too small (#2529)

Fixes
https://linear.app/zed-industries/issue/Z-1834/bottom-dock-can-be-dragged-down-far-enough-such-that-the-tab-bar-is

Release Notes:

- Improved the resize experience for the bottom dock, preventing it from
becoming too large or too small. (preview-only)
24098c561dAntonio Scandurra committed on 5/25/2023, 1:44:23 PM· committed by GitHubparentsf549ada4185a17
1 file changedLine totals unavailable