Describe the bug

I am trying to enable tracing in a JMS based application with
export OTEL_INSTRUMENTATION_MESSAGING_EXPERIMENTAL_RECEIVE_TELEMETRY_ENABLED=true
export OTEL_INSTRUMENTATION_MESSAGING_EXPERIMENTAL_CAPTURE_HEADERS=key,correlationId

It seems only the headers in lowercase are getting captured in the span attributes like "key" but not "correlationId" which is in camelCase

instead if it was set like OTEL_INSTRUMENTATION_MESSAGING_EXPERIMENTAL_CAPTURE_HEADERS=key,correlationid and the actual headers too had a lowercase "correlationid" then it would get captured successfully in the captured span attributes.

Is it the case that the agent is programmed to capture only lowercase headers ?

Steps to reproduce

instrument a jms based app with
export OTEL_INSTRUMENTATION_MESSAGING_EXPERIMENTAL_RECEIVE_TELEMETRY_ENABLED=true
export OTEL_INSTRUMENTATION_MESSAGING_EXPERIMENTAL_CAPTURE_HEADERS=key,correlationId

where headers are in camelCase

Expected behavior

the configured jms headers in OTEL_INSTRUMENTATION_MESSAGING_EXPERIMENTAL_CAPTURE_HEADERS are captured in the span attributes irrespective of their case

Actual behavior

only the lowercase configured jms headers in OTEL_INSTRUMENTATION_MESSAGING_EXPERIMENTAL_CAPTURE_HEADERS are captured in the span attributes

Javaagent or library instrumentation version

2.17.1

Environment

JDK:
OS:

Additional context

No response

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