fix: simplify action quoting on Windows

[henryiii]

I'm not sure the quoting was necessary to make this complicated, I don't see a reason in #1346. This is option 1 to fix #1740. Would also close #1741, which is option 2 (personally, if option 1 doesn't work, option 3 seems better than option 2).

This is needed to support Powershell 7.4, which is beginning to ship on GHA.

The action is not exercised in tests, so we'll need someone to check it. I can later today, perhaps. (It seems to be in the tests, actually)

[henryiii]

Ahh, so the problem is that "" resolves to nothing, while '""' resolved to the empty string (pre-7.4), but now resolves to the string "". That's why the quoting was that way. Is there a recommended alternative to pass the empty string in powershell 7.3/7.4?

[henryiii]

I don't understand what is eating those empty args. If I run powershell 7.4.1 on my Mac, I see python3 -c "import sys; print(sys.argv)" "" produces ['-c', ''], as I'd expect, and pipx passes them through correctly too. YAML shouldn't be eating them inside a block, so I'm not sure where they are going.

[henryiii]

Ahh, I bet the runner we are using is old, and old runners have the older powershells. Yeah, that's it:

$PSNativeCommandArgumentPassing = 'Legacy'
PS /Users/henryschreiner/git> python3 -c "import sys; print(sys.argv)" ""
['-c']

Okay, that's a great change, and it's annoying for us until every runner (presumably including local ones) supports it.