Fix Win10 version check AGAIN (resolves #3270, #3272)

fixes 587855522

src/BizHawk.Common/OSTailoredCode.cs

@@ -44,10 +44,11 @@ namespace BizHawk.Common
 				if ((GetRegValue("ProductName") ?? "Windows 10").Contains("Windows 10"))
 				{
 					// Win11 has ProductName == "Windows 10 Pro" MICROSOFT WHY https://stackoverflow.com/a/69922526 https://stackoverflow.com/a/70456554
-					Version win10PlusVer = new(FileVersionInfo.GetVersionInfo(@"C:\Windows\System32\kernel32.dll").FileVersion.SubstringBefore(' '));
+//					Version win10PlusVer = new(FileVersionInfo.GetVersionInfo(@"C:\Windows\System32\kernel32.dll").FileVersion.SubstringBefore(' ')); // bonus why: this doesn't work because the file's metadata wasn't updated
+					Version win10PlusVer = new(10, 0, int.TryParse(GetRegValue("CurrentBuild") ?? "19044", out var i) ? i : 19044); // still, leaving the Version wrapper here for when they inevitably do something stupid like decide to call Win11 11.0.x (or 10.1.x because they're incapable of doing anything sensible)
 					return (win10PlusVer < new Version(10, 0, 22000) ? WindowsVersion._10 : WindowsVersion._11, win10PlusVer);
 				}
-				// ...else we're on 8.1. Can't be bothered writing code for KB installed check, not that I have a Win8.1 machine to test on anyway, so it gets a free pass (though I suspect comparing against the kernel32.dll version would work here too). --yoshi
+				// ...else we're on 8.1. Can't be bothered writing code for KB installed check, not that I have a Win8.1 machine to test on anyway, so it gets a free pass (though I suspect `CurrentBuild` would work here too). --yoshi
 				winVer = WindowsVersion._8_1;
 			}
 			else if (rawWinVer == new Version(6, 2)) winVer = WindowsVersion._8;