fix(processor): run after_exit decorators when tracing

[KitaroMoha563]

Align after-exit decorator gating with tracing-aware execution, so Trace decorators are emitted when tracing is enabled without debug mode.

[huitseeker]

Thanks a lot! Please clean up the doc and sign commits.

[github-actions]

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• 80da3562 fix(processor): run after_exit decorators when tracing
• c3038f00 docs(changelog): add after_exit tracing fix note

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[huitseeker]

Thanks!