sql: keep track of per-stmt read committed retries

[rafiss]

This change makes it possible to view automatic retries performed under read committed txns in the DB Console.

fixes #113986
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?

_{🦉 Hoot! I am a Blathers, a bot for CockroachDB. My owner is dev-inf.}

[cockroach-teamcity]

This change is 

[nvanbenschoten]

Reviewed 2 of 2 files at r1, all commit messages.
Reviewable status: complete! 1 of 0 LGTMs obtained (waiting on @michae2 and @rafiss)

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pkg/sql/txn_state.go line 80 at r1 (raw file):

		// autoRetryCounter keeps track of the number of automatic retries that
		// have occurred. It includes per-statement retries performed under READ
		// COMMITTED as well as transaction retries for serialization failures.

"for serialization failures under SNAPSHOT and SERIALIZABLE"

[rafiss]

tftr!

bors r+

Reviewable status: complete! 0 of 0 LGTMs obtained (and 1 stale) (waiting on @michae2 and @nvanbenschoten)

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pkg/sql/txn_state.go line 80 at r1 (raw file):

Previously, nvanbenschoten (Nathan VanBenschoten) wrote…

"for serialization failures under SNAPSHOT and SERIALIZABLE"

done

[craig]

Build succeeded:

• Bazel Essential CI (Cockroach)