Unhide SQL Server deadlocks collection config

[nenadnoveljic]

What does this PR do?

Unhide SQL Server deadlocks collection config.

Motivation

The agent and backend are ready. Frontend will be ready by the time the next agent version is released.

Additional Notes

The deadlocks collection remains disabled by default for now.

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Changelog entries must be created for modifications to shipped code
• Add the qa/skip-qa label if the PR doesn't need to be tested during QA.
• If you need to backport this PR to another branch, you can add the backport/<branch-name> label to the PR and it will automatically open a backport PR once this one is merged

[github-actions]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.61%. Comparing base (797869d) to head (7d951e7).
Report is 1 commits behind head on master.

Additional details and impacted files

Flag	Coverage Δ
activemq	?
cassandra	?
hive	?
hivemq	?
hudi	?
ignite	?
jboss_wildfly	?
kafka	?
presto	?
solr	?
sqlserver	89.38% <ø> (+9.63%)	⬆️

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