fix: table list scroll, make result set header sticky

[cb1kenobi]

If you have many tables, you need to scroll the entire browser window to scroll the list of tables. This PR restricts the height of the sidebar to the browser window's height and will automatically show the scrollbar if the list of tables exceeds the height of the browser window.

A nice side effect of this, it fixes the mismatched background color behind the "Create a Table" button.

It also makes the result set table header sticky so you can see the column names as you scroll.

This does not make the Add new Record, Import CSV, etc elements sticky. It also doesn't make the pagination in the footer sticky. Only the table header.

[gemini-code-assist]

Code Review

This pull request refactors the database view layout to support sticky headers and a sticky sidebar using Tailwind CSS. The review feedback points out syntax errors in Tailwind v4 spacing variables (using parentheses instead of hyphens) in both ColumnFilters.tsx and index.tsx. Additionally, there is a concern that changing the table container to overflow-visible in TableView.tsx will disable horizontal scrolling for wide tables.

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