feat(psl): add support for READ COMMITTED in cockroachdb

[jkomyno]

DRAFT

This PR allows provider = "cockroachdb" to use the ReadCommitted isolation level.
Related issue: prisma/prisma#24687.

This will also require changes in https://github.com/prisma/prisma/blob/f0a2f8fb46e18e214bfa8af7922b5d24a3b8626c/packages/client/tests/functional/interactive-transactions/tests.ts.

/integration

[codspeed-hq]

CodSpeed Performance Report

Merging #5249 will not alter performance

_{Comparing feat/cockroachdb-read-committed (695b0af) with main (d3fd116)}

Summary

✅ 11 untouched benchmarks

[github-actions]

WASM Query Engine file Size

Engine	This PR	Base branch	Diff
Postgres	2.132MiB	2.132MiB	0.000B
Postgres (gzip)	858.916KiB	858.917KiB	-2.000B
Mysql	2.095MiB	2.095MiB	0.000B
Mysql (gzip)	844.265KiB	844.267KiB	-2.000B
Sqlite	2.005MiB	2.005MiB	0.000B
Sqlite (gzip)	807.611KiB	807.613KiB	-2.000B