Use pnpm exec in lefthook

[IlyaSemenov]

Currently, lefthook runs global oxlint and oxfmt. This is incorrect, it should run project-local binaries.

Without the fix:

% git ci -am "Export QuerySchema from pqb and orchid-orm"
╭───────────────────────────────────────╮
│ 🥊 lefthook v1.7.18  hook: pre-commit │
╰───────────────────────────────────────╯
┃  fmt ❯

sh: oxfmt: command not found

┃  lint ❯

sh: oxlint: command not found

with the fix:

sync hooks: ✔️ (pre-commit)
┃  fmt ❯

Finished in 95ms on 2 files using 12 threads.

┃  lint ❯

Found 0 warnings and 0 errors.
Finished in 8ms on 1 file with 65 rules using 12 threads.

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[romeerez]

Thank you! I noticed it was failing for AI, but was postponing figuring out why, so here is the fix.