Create a terminal settings default terminal executable setting - because On windows, cmd.exe is being chosen by default and it requires a custom env variable to change it

Use "Show in" and choose Terminal.

It keeps choosing cmd.exe by default. I cannot seem to get it to stop.

I removed it from everything yet it still uses it?

It seems like this is set [here](https://github.com/eclipse-platform/eclipse.platform/blob/401d48340e4b43d76bb306acc01e306c3c93cb4e/terminal/bundles/org.eclipse.terminal.connector.local/src/org/eclipse/terminal/connector/local/launcher/LocalLauncherDelegate.java#L276). If a ComSpec environment variable is set, it uses that for the terminal. Otherwise, it seems to use cmd.exe on windows.

So an environment variable is needed to fix the issue. Which means the Terminal configuration dialog options are inadequate with this regard.

Suggested change

Clicking button would show the choose terminal profile dialog, similar to dialog displayed when launching a terminal: