[DBMON-6323] update sqlserver dashboard syntax

[eric-weaver]

What does this PR do?

Updates SQL Server integration dashboard to use the newer multi metric query dashboard syntax instead of the older "q" style metrics. This change only reformats existing metric widgets. There should be no functional differences.

Metrics were compared against existing and new dashboard json to verify it still works the same

SQL Server - Metrics integration dashboard

SQL Server - Metrics dashboard imported in from this PR

Motivation

Prerequisite change for supporting Otel emitted metrics out of the box

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• 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]

⚠️ Recommendation: Add qa/skip-qa label

This PR does not modify any files shipped with the agent.

To help streamline the release process, please consider adding the qa/skip-qa label if these changes do not require QA testing.