[receiver/jmx] Deprecate component

[rogercoll]

Component(s)

receiver/jmx

Describe the issue you're reporting

Requiring the Collector to run Java is problematic, especially since the Collector is commonly deployed as a Docker image and none of the official images ship a Java runtime, resulting in a broken user experience. Managing a standalone Java process is better handled through traditional mechanisms, not via Collector-managed subprocesses.

More broadly, the Collector should not run subprocesses at all; the jmxreceiver is an exception that sets an undesirable precedent, even with its checksum-based restrictions. This issue is closely tied to the lack of Java tooling in distributed Collector images.

Context: #34825 (comment)

• Change component stability to deprecated
• Remove the component from distributions by June 2026
• Remove the code for this component by July 2026

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[github-actions]

Pinging code owners:

• receiver/jmx: @atoulme @rogercoll

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[rogercoll]

cc @atoulme

[paulojmdias]

@rogercoll I assigned it to you as you have an open PR. Please let me know if I should remove the assignment 🙏

[atoulme]

I am ok with this plan. Thanks for taking initiative.

[rogercoll]

Reopening it due there still some missing tasks (distribution and code removal)

[breedx-splk]

Relates to #34825.