[Bug Fix] Rebuild MCP registry snapshot (#412)

Registry was stale since #391 — missing Toast (#389), Toggle/ToggleGroup (#392),
Combobox popover width (#397) and Sheet initial open state (#402) changes.
Regenerated with `cd mcp && bundle exec exe/ruby-ui-mcp-build`.

Fixes the "MCP registry up to date" CI check failing on main and all open PRs.

Author: djalmaaraujo