[Windows] Use GetFileTime for FileAccess

[AThousandShips]

Prevents DST from rearranging file times.

_wstat does weird things with DST, which from I can find does not apply to Unix

Internally the same function is used but _wstat converts it to local time, without indicating DST, the approach here is based on that in Windows CRT, using creation time as fallback, and here ensuring the epoch is valid.

For all except DST overlap times this gives the same result, in UTC

Edit: Also resolves an inconsistency between MinGW and MSVC builds, see #92911

Fixes #74816
Fixes #92911
Fixes #96810
Fixes #96828
Fixes #96812

[AThousandShips]

For easy testing, use PowerShell and (Get-Item file).LastWriteTimeUtc=("date") and see that time during the hour of overlap with DST now works

[AThousandShips]

Need to investigate an issue that has arisen with this, unsure what exactly but it no longer works on my setup, will try fix it when I find the time to dig through the Windows stuff

Edit: Works now, had to add a flag to be able to process directories, which broke detection, now it works correctly

[KoBeWi]

I marked this as fix for #92911, but after testing again now, the results are wrong. Did something change?

[AThousandShips]

I will take a look, nothing should have changed though

In what way are the results wrong?

[KoBeWi]

Expected results is that I get the same modified time in a dev build and an official build. This is no longer true.

[AThousandShips]

This code hasn't changed so I suspect something with the official builds have changed, or windows libraries

[akien-mga]

CC @bruvzg

[akien-mga]

Thanks!

[AThousandShips]

Thank you!

[The-Cyber-Captain]

LOL. You won't believe how insane this manifested itself when targeting VR; ie, iterating Win-based exports / remote debugs of Android APKs for standalone headsets. I thought I was going full-on LAWNMOWER MAN mad inside the VR there. (With changed resources apparently 'randomly' being updated or included in the next run... all based on what the Godot Editor under Windows thought had changed on file, obviously, in hindsight)

Thanks for the quick fix! Looks like you managed to get it rectified and merged in less time than it took me to even pinpoint and reproduce for a Bug Report. Bravo!!! [applause]

[akien-mga]

Cherry-picked for 4.3.1.