refactor(Pagination): overhaul stories to fix Storybook controls

[garrity-miepub]

• Replace custom PaginationDemo render functions with args-connected pattern
• Add PaginationWithState wrapper component that manages internal state
  while passing through all Storybook control props
• Add proper argTypes for all props:
  • variant: select dropdown (default, outline, ghost)
  • size: select dropdown (sm, md, lg)
  • showFirstLast: boolean toggle
  • showPrevNext: boolean toggle
  • siblingCount: number input with min/max bounds
  • page/totalPages: number inputs
• Convert all stories to use args objects with ...Default.args spread
• Add SimplePaginationWithState wrapper for SimplePagination stories
• Disable controls on showcase stories (AllVariants, AllSizes)

This fixes the docs page where controls were not working because the
previous implementation used render functions that didn't connect
props to Storybook's args system.

pagination-updates.mov