Three issues fixed in the template builder field type grid:
1. Focus ring clipping: the sidebar container had pl-0.5 (2px) which caused
the 8px outline + 4px offset to be clipped on left-column buttons (Text,
Checkbox, Radio, Stamp). Increased to pl-3 (12px) to give the ring room.
2. ARIA state: add aria-pressed to each field type button so screen readers
announce when a type is active (selected for drawing).
3. Decorative content: add aria-hidden to the drag handle div and field icon
so screen readers only read the text label, not "icon name + label".
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>