Improve the efficiency of trace stitching

From the way benchmarks have been responding to recent PRs, it certainly seems like side exits could be made more efficient, especially in the happy path. This is especially true of _DYNAMIC_EXIT, which needs to do quite a bit of work for a successful stitch... perhaps the best option here is to just reduce the number of _DYNAMIC_EXITs that we run.

This could also include recompiling stitched traces together into the same executor to essentially remove stitching overhead, too.

Linked PRs

• gh-122295

A issue não nomeia arquivos nem testes. Comece examinando as respostas dos benchmarks e o caminho de trace-stitching em torno de _DYNAMIC_EXIT; determine se é viável reduzir os dynamic exits ou recompilar os stitched traces. O trabalho estará concluído quando for demonstrada uma redução do overhead de stitching nos benchmarks relevantes.