gh-151229: Finalize JIT tracer in test eval-frame stub#151609
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A test-only interpreter stubs out JIT compilation as a no-op, but the stub also forgot to reset the tracer's is_tracing flag. Under
PYTHON_JIT_STRESS=1, a trace can start inside this stub and never finalize, leaving is_tracing stuck true, so the recursive-trace guard rejects every future trace, silently disabling the JIT for the rest of the process.PYTHON_JIT_STRESS=1#151229