Avoid exceptions when parsing _NormalizedWindowsSdkSupportedTargetPlatformVersion

[dsplaisted]

For "funky" reasons related to dotnet/msbuild#3460, the version normalization that we added in #50264 is causing exceptions to be thrown. This isn't a functional issue, the fact that the exceptions are thrown and then caught are part of how MSBuild works.

However, the additional exceptions are showing up on VS perf tests as a regression in the total number of exceptions thrown.

This PR rewrites the logic to avoid calling Version.Parse on the %(Identity), which should avoid the exceptions.

[rainersigwald]

Unfortunately in the speculative-evaluation path GetValue({}) throws an IndexOutOfRangeException. Thinking of alternatives.

[rainersigwald]

AFAIK in the debugger this works with no internal exceptions:

Suggested change

	Condition="$([MSBuild]::ValueOrDefault('%(Identity)', '').Split('.').Length) == 4 And
	$([MSBuild]::ValueOrDefault('%(Identity)', '').Split('.').GetValue(3)) == '1'"
	>$([MSBuild]::ValueOrDefault('%(Identity)', '').Split('.').GetValue(0)).$([MSBuild]::ValueOrDefault('%(Identity)', '').Split('.').GetValue(1)).$([MSBuild]::ValueOrDefault('%(Identity)', '').Split('.').GetValue(2)).0</NormalizedSupportedTargetPlatformVersion>
	Condition="$([System.Text.RegularExpressions.Regex]::IsMatch(%(Identity), '^((\d+\.){3})1$'))"
	>$([System.Text.RegularExpressions.Regex]::Replace(%(Identity), '^((\d+\.){3})1$', '${1}0'))</NormalizedSupportedTargetPlatformVersion>