release-23.2: builtins: skip TestSerialNormalizationWithUniqueUnorderedID under deadlock

[blathers-crl]

Backport 1/1 commits from #115685 on behalf of @arulajmani.

/cc @cockroachdb/release

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This test is extremely slow -- it takes ~30s to run normally. The addition of test-only verification pushed it over the edge, such that running it under the deadlock detector would cause spurious failures, so we skip it.

Closes #115541
Release note: None

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Release justification: test only change.

[blathers-crl]

Thanks for opening a backport.

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[cockroach-teamcity]

This change is