release-24.1: txnwait: do not require vmodule to log deadlocks in a workload

[blathers-crl]

Backport 1/1 commits from #99315 on behalf of @arulajmani.

/cc @cockroachdb/release

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Deadlocks in a workload are rare (and bad) enough that they should be logged at the level of Info, instead of under vmodule.

Epic: none

Release note: None

---

Release justification: low-risk obs change.

[blathers-crl]

Thanks for opening a backport.

Please check the backport criteria before merging:

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[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 

[github-actions]

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