code monitoring: show warning and disable email if smtp is not configured
Created by: limitedmage
Closes #37583 (closed)
FYI @almeidapaulooliveira @benvenker I'm not following the Figma design exactly because I thought it'd be valuable to add a link to the docs, thereby increasing the text. I think putting the alert in its own line makes sense in this case. Let me know if you disagree or want to make changes to the content.
Test plan
Manual testing verifying on local instance with email.smtp settings commented out.
App preview:
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