create-next-app: Add `ignoreScripts` for `unrs-resolver` on bun (#86324)
`unrs-resolver`'s postinstall script is only needed for legacy versions
of npm, so it's safe to ignore:
https://github.com/unrs/unrs-resolver/issues/193#issuecomment-3295510146
Without this, bun blocks the postinstall script (okay) and logs a
warning (not ideal, confusing to end users). This prevents it from
running and suppresses the warning. This matches what we now do in
`pnpm` (https://github.com/vercel/next.js/pull/83168) but for `bun`.
Context:
- https://vercel.slack.com/archives/C03KAR5DCKC/p1763570835510729
- https://vercel.slack.com/archives/C06DNAH5LSG/p1763580178004169
## Before
## After
next.js
d53a7a72 - create-next-app: Add `ignoreScripts` for `unrs-resolver` on bun (#86324)
