sql: job SessionData OptimizerFKCascadesLimit not defaulting to optDrivenFKCascadesClusterLimit

[ecwall]

Fixes #101265

SessionData available to in the job context has a 0-value OptimizerFKCascadesLimit.

This causes DELETE queries run by the job with an inbound on-delete-cascade FK to fail with an error cascades limit (0) reached.

This change fixes this by populating OptimizerFKCascadesLimit in sql.NewFakeSessionData.

Release note: None

[blathers-crl]

It looks like your PR touches production code but doesn't add or edit any test code. Did you consider adding tests to your PR?

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[cockroach-teamcity]

This change is 

[otan]

does this need to be backported all the way back, or just ones we support TTL for?

[ecwall]

does this need to be backported all the way back, or just ones we support TTL for?

I think it is better to backport this to prevent unexpected behavior. It would be easy to alter a table with ON DELETE CASCADE and have it affect a seemingly unrelated job (or anything else using NewFakeSessionData).

[ecwall]

bors r=otan

[craig]

Build succeeded:

• Bazel Essential CI (Cockroach)

[blathers-crl]

Encountered an error creating backports. Some common things that can go wrong:

1. The backport branch might have already existed.
2. There was a merge conflict.
3. The backport branch contained merge commits.

You might need to create your backport manually using the backport tool.

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Backport to branch 22.2.x failed. See errors above.

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Backport to branch 23.1.x failed. See errors above.

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Backport to branch 23.1.0 failed. See errors above.

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