ldapccl: fix LDAP cluster settings callback

[souravcrl]

ldapccl: fix LDAP cluster settings callback

Epic CRDB-33829

Release note(security, ops): Cluster settings for LDAP cluster settings server.ldap_authentication.client.tls_certificate and server.ldap_authentication.client.tls_key don't have callbacks installed to reload the settings value for LDAP authManager. This change fixes this by adding the necessary callbacks.

[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 

[pritesh-lahoti]

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

[sanchit-CRL]

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

[souravcrl]

TFTR !

bors r=pritesh-lahoti,sanchit-CRL

[craig]

Build succeeded:

• docker_image_amd64
• unit_tests
• linux_amd64_fips_build
• local_roachtest
• local_roachtest_fips
• linux_arm64_build
• macos_arm64_build
• check_generated_code
• linux_amd64_build
• acceptance
• macos_amd64_build
• windows_build
• examples_orms
• lint

[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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error creating merge commit from d918f38 to blathers/backport-release-24.2-131151: POST https://api.github.com/repos/cockroachdb/cockroach/merges: 409 Merge conflict []

you may need to manually resolve merge conflicts with the backport tool.

Backport to branch 24.2.x failed. See errors above.

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