[DA] Planetscale engine tests: occ

[miguelff]

This is a subcluster of failures after having enabled planetscale tests in #4423

Failing tests in this cluster:

new::occ::occ::occ_delete_test
new::occ::occ::occ_update_many_test
new::occ::occ::occ_update_test

Please follow this process

[janpio]

Is this potentially related to prisma/prisma#21867?

[jkomyno]

I confirm that this is related to prisma/prisma#21867.

If our PlanetScale drivers were set up to be using relationMode = "foreignKeys" in the query-engine test suite, the OCC test cases above would pass with both the Vitess("planetscale.js") (Napi) and the Vitess("planetscale.js.wasm") (Wasm) test tags:

test new::occ::occ::occ_update_many_test ... ok

test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 1667 filtered out; finished in 4.68s

test new::occ::occ::occ_delete_test ... ok

test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 1667 filtered out; finished in 1.93s

test new::occ::occ::occ_update_test ... ok

test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 1667 filtered out; finished in 1.84s

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I'd recommend a refactoring of the connector-test-kit-rs test suite setup to allow opting in and out of relationMode = "prisma" | "foreignKeys", so that we can consistently run CI on e.g. OCC tests with PlanetScale. The specifics of this technical change can be discussed with other engineers in the team.