Hard mute (#12376)

* feat(backend,misskey-js): hard mute storage in backend

* fix(backend,misskey-js): mute word record type

* chore(frontend): generalize XWordMute

* feat(frontend): configure hard mute

* feat(frontend): hard mute notes on the timelines

* lint(backend,frontend): fix lint failure

* chore(misskey-js): update api.md

* fix(backend): test failure

* chore(frontend): check word mute for reply

* chore: limit hard mute count