Fixed UnitInput value not being set correctly in monitoring

[eva-vashkevich]

Summary

Fixes #12436

Fixed 'Override Group Interval' and 'Wait to fire for' fields when creating Prometheus rule.

Occurred changes and/or fixed issues

During vue migration, .includes usage inside set became corrupted.

Technical notes summary

Areas or cases that should be tested

Make sure that 'Override Group Interval' and 'Wait to fire for' fields can be set correctly:

Install monitoring chart
Once chart installed successfully goto Monitoring->Advanced->PromethuesRules->Create Rule.
Create prometheus rules and add alerting rules with "wait to fire for" and "Override Group Interval" values.

Areas which could experience regressions

None

Screenshot/Video

Checklist

• The PR is linked to an issue and the linked issue has a Milestone, or no issue is needed
• The PR has a Milestone
• The PR template has been filled out
• The PR has been self reviewed
• The PR has a reviewer assigned
• The PR has automated tests or clear instructions for manual tests and the linked issue has appropriate QA labels, or tests are not needed
• The PR has reviewed with UX and tested in light and dark mode, or there are no UX changes

[momesgin]

codewise lgtm, I tried to test it on my local but my instance has been unreliable today.

UPDATE: I was able to test it on another env and the fix works as expected 🚀