fix: java regional endpoint processing

[manisha1997]

Fixes

Reversing regional endpoint mapping.
Changing warning message

Checklist

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[sbansla]

Improvement in existing functionality:
In the existing code, the default region is set to us1. The issue with this approach is that if a customer has only set the frankfurt edge location, the resulting URL will be: api.frankfurt.us1.twilio.com.
In this case, the backend ignores the edge location, and the request is processed in the us1 region.

If the default region is removed, the resulting URL will be: api.frankfurt.twilio.com However, this request will fail.

Idea of the change is: We can be very transparent in setting region and edge.

[sonarqubecloud]

Quality Gate passed

Issues
4 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud