ensure 3XX responses without location header do not throw

[baywet]

follow up to microsoft/kiota#4367
and microsoft/kiota#4190

Implement a unit test with a 304 response, no location header, check the request adapter returns null and doesn't throw.
Most likely this line will need to be adapted.

kiota-java/components/http/okHttp/src/main/java/com/microsoft/kiota/http/OkHttpRequestAdapter.java

Line 611 in 59a86b0

if (response.isSuccessful()) return response;