Debugger step requests ignored when nested commands are running

[andyleejordan]

Prerequisites

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Steps to reproduce

Trying to step when any nested command that wasn't PSRL was running caused us to essentially ignore the request. This caused VSCode to think we were "running" while we didn't actually cancel anything.

Expected behavior

The step to work.

Actual behavior

It just "hangs" and you can only step via `s` at the terminal.

Error details

No response

Environment data

N/A

Version

v2022.8.2-preview

Visuals

No response