Add python3 as a shim on Windows

[trolleyman]

On Windows, python3 is set to open the Windows store when run (thanks Microsoft 🥲). This breaks quite a few things, and I'd like the option to add this as a shim to override it - I can turn it off here, but thought it might be good to report so that this can be resolved by default. I've manually added python3.cmd at the moment, but do get warnings that it will be removed if I run mise reshim - is there an option somewhere where I can set it to manually be created (/ should this be added to the default Python installation on Windows)?

Also, sometimes when running mise activate pwsh --shims twice (which sometimes happens when reloading Powershell), I get this error:

Invoke-Expression: C:\Users\ctoll\Documents\PowerShell\profile.ps1:28
Line |
  28 |      mise activate pwsh --shims | Out-String | Invoke-Expression
     |                                                ~~~~~~~~~~~~~~~~~
     | Cannot bind argument to parameter 'Command' because it is an empty string.

I've figured out that if I do this it works, is this intended?

mise activate pwsh | Out-String | Invoke-Expression
mise activate pwsh --shims | Out-String | Invoke-Expression

(The reason I'm doing this rather than modifying the User PATH environment variable is that this doesn't override the machine's PATH, meaning the python3 bundled with Windows is run rather than mise's version.)