Tailwind v4 defines its own --font-sans and --font-mono tokens
independently of the Hermes theme variables. Components using
font-sans/font-mono utility classes bypass --theme-font-sans and
--theme-font-mono, so theme font changes have no effect.
Add --font-sans and --font-mono bridges in the @theme inline block
so Tailwind's font tokens follow the active Hermes theme.
Fixes#20380