Add circuit breaker to while loop in `getMatomoInfo()` in newslabs header

[dannymeloy]

If the backend (/whois or /whoami endpoints) is unreachable, this results in the getMatomoInfo() function not returning / erroring, which in turn stops downstream services (ie. C&M) from being able to boot.

This appears to have occurred during testing.

A early return statement could be added or an error could be thrown if this request is unsuccessful after a number of attempts.

Note: If the request times out, whilst it shows in the network tab, the error is not thrown inside the getMatomoInfo function, so does not cause downstream services to exit.

[markrowland2]

@dannymeloy we talked about renaming this on Monday. How's "Provide user with feedback if necessary certificates are not identified"?