[Improvement] Dynamically change default shell selection based on OS

[X0RW3LL]

I noticed OS selection preserves the state of the shell selection. Would it be better if the default shell selection matched the target OS's default shell to serve as the initial placeholder?

As shown in the example screenshot, selecting Windows retains /bin/sh (or whatever the previous selection was), as opposed to defaulting to cmd, for instance.

This is a very low-priority issue, but a potential consideration for improvement.