Supersedes #1252 and #872. uuid 14 is ESM-only, apps/web/jest.config.ts only
kept v9 working by mapping `^uuid$` at a `wrapper.mjs` that v14 no longer
ships, and the specifier also has to be synced in
libs/shared/m3u-utils/package.json or @nx/dependency-checks fails lint.
All four call sites only used `v4()`, so the dependency goes away instead.
`createRandomId()` prefers `crypto.randomUUID()` and falls back to building the
same v4 shape from `crypto.getRandomValues()` — that fallback is load-bearing,
because randomUUID is only exposed in secure contexts and the self-hosted PWA
is regularly served over plain http on a LAN address. getRandomValues stays
available there, and it is what uuid's own v4 used.
`@types/uuid` goes too; it only existed for the untyped v9 package.
4gray