Prometheus JMX exporter incorrectly returns both Content-Length and Transfer-Encoding response headers for gzip compressed response in JBoss EAP 7 image

Issue

Prometheus JMX exporter incorrectly returns both Content-Length and Transfer-Encoding response headers for gzip compressed response in JBoss EAP 7 image.

However, RFC 7230 - Section 3.3.2. Content-Length (and also the latest RFC 9112 - Section 6.2. Content-Length) expressly forbids returning both Content-Length and Transfer-Encoding response headers in a response:

A sender MUST NOT send a Content-Length header field in any message that contains a Transfer-Encoding header field.