Remove unnecessary Trim() call of debug command line being invoked - #8594

PR Summary

The previous code was trimming the command line before passing it to PowerShell to invoke. This is incorrect as it transforms what the user typed. Specifically this causes an issue with PSReadLine. Fix is to remove the Trim() call and pass the command line through as-is. Tested manually that the issue still repro'd and resolved with this change.

Fix #5374

PR Checklist

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