[Backport release/0.0.14] mark a test as self_hosted

[github-actions]

Description

Backport of #4190 to release/0.0.14.

[greptile-apps]

Confidence Score: 5/5

Safe to merge: the updated marker selects the detection test in its intended self-hosted environment.

What we checked:

• T-Rex executed the marker contract harness to validate the contract against HEAD^ and HEAD with CI=1, using the Linux self-hosted marker expression.
• The harness’s before-run state showed 1 deselected in 0.10s with exit code 5.
• The harness’s after-run state showed 1 passed in 0.10s with exit code 0.
• A blocker prevented completing the full fixture by failing to install the test environment due to portaudio.h being absent, with pyaudio==0.2.14 pulled via unitree-webrtc-connect.

Summary

• Reclassifies test_detection2d so the Linux self-hosted test selection includes it under CI conditions.
• The marker comparison confirmed that the previous test was deselected while the updated test runs and passes with the same self-hosted selection expression.
• No issues requiring changes were found.

_{Reviews (1) · Last reviewed commit: "mark a test as self_hosted (#4190)"}