ci windows bazel libcurl version skew

Executing tests on GHA with the windows-bazel builds results in a libcurl error of an "unknown option". This started when we added the CURLOPT_NOPROXY for the MDS to curl_impl.cc and continued even after we wrapped the option with a conditional to check the libcurl version to guarantee support.

As this compiles without issue, but results in a runtime failure, the suspicion is that the library version linked is not the same as the libcurl headers version, but we don't have definitive proof at this time.

For now, we have added another conditional compilation define to work around this runtime failure thats specific to our windows-bazel CI.