update disabled metrics/exposures to use add_disabled

[emmyoop]

resolves #5422

Description

Account for being able to disable metrics and exposures in yaml files in addition to just tests.

Note: No changelog since this is a fix for changes in upcoming release.

Checklist

• [ ] I have read the contributing guide and understand what's expected of me
• [ ] I have signed the CLA
• [ ] I have run this code in development and it appears to resolve the stated issue
• [ ] This PR includes tests, or tests are not required/relevant for this PR
• [ ] I have opened an issue to add/update docs, or docs changes are not required/relevant for this PR
• [ ] I have run changie new to create a changelog entry