release-21.2: colexecop: harden CloseAndLogOnErr against panics

[blathers-crl]

Backport 1/1 commits from #70467 on behalf of @yuzefovich.

/cc @cockroachdb/release

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We have seen a few cases where closing the Closers would lead to
a panic which wasn't caught because we're outside of the panic-catcher
scope. This commit adds a panic-catcher to CloseAndLogOnErr (which is
the "root" way of closing things) in order to increase the stability of
CRDB in face of edge case bugs.

Addresses: #70000.
Addresses: #70438.

Release note: None

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Release justification:

[blathers-crl]

Thanks for opening a backport.

Please check the backport criteria before merging:

• Patches should only be created for serious issues.
• Patches should not break backwards-compatibility.
• Patches should change as little code as possible.
• Patches should not change on-disk formats or node communication protocols.
• Patches should not add new functionality.
• Patches must not add, edit, or otherwise modify cluster versions; or add version gates.

If some of the basic criteria cannot be satisfied, ensure that the exceptional criteria are satisfied within.

• There is a high priority need for the functionality that cannot wait until the next release and is difficult to address in another way.
• The new functionality is additive-only and only runs for clusters which have specifically “opted in” to it (e.g. by a cluster setting).
• New code is protected by a conditional check that is trivial to verify and ensures that it only runs for opt-in clusters.
• The PM and TL on the team that owns the changed code have signed off that the change obeys the above rules.

Add a brief release justification to the body of your PR to justify this backport.

Some other things to consider:

• What did we do to ensure that a user that doesn’t know & care about this backport, has no idea that it happened?
• Will this work in a cluster of mixed patch versions? Did we test that?
• If a user upgrades a patch version, uses this feature, and then downgrades, what happens?

[cockroach-teamcity]

This change is 

[yuzefovich]

I'd like to get this in for 21.2.0, cc @rytaft.

[rytaft]

Since this is addressing the same issue we already discussed in the meeting, I think you can go ahead and merge.

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