Improve table props and docs

[Shrinks99]

Changes

• Shifts Table documentation to use the compositional primitives (TableContainer, TableHeader, TableRow, TableHead, TableCell) as the primary API (trying to align with other components)
• Adds new props to table primitives: tableLayout on TableContainer, truncate on TableHead/TableCell, clickable on TableRow, and sticky on TableHeader
• Moves clickable row styles from the high-level Table wrapper to the TableRow primitive so they work in both compositional and data-driven usage
• Applies style prop to the outer scrollable <div> in TableContainer so devs can constrain height for sticky headers
• Rewrites table docs with new sections for column sizing, truncation, responsive columns (container queries!), and sticky headers

Caveats

• Sticky header border disappears while scrolling due to border-collapse limitations.
  • The preflight's scoped border-collapse: collapse conflicts with border-separate needed for sticky borders; needs a broader fix.

[tmccoy14]

Looks good to me