Update metrics settings alert to pajamas
What does this MR do and why?
Update metrics settings alert to pajamas
- use new pajamas system for alerts
Changelog: changed
Screenshots or screen recordings
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How to set up and validate locally
- Navigate to a project => Settings => Metrics
MR acceptance checklist
This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.
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I have evaluated the MR acceptance checklist for this MR.
Related to #354589 (closed)