`LinkerHintGeneratorTask` doesn't correctly determine the TFM

[Youssef1313]

Current behavior

uno/src/SourceGenerators/Uno.UI.Tasks/LinkerHintsGenerator/LinkerHintGeneratorTask.cs

Lines 381 to 384 in 5ed505c

	var runtimeTargetFramework =
	new Version(TargetFrameworkVersion) >= new Version("7.0")
	? "net7.0"
	: "netstandard2.0";

Expected behavior

I think using TargetFrameworkVersion value directly here should work now that we don't have netstandard.

I don't know the effect of this wrong calculation though.

How to reproduce it (as minimally and precisely as possible)

No response

Workaround

No response

Works on UWP/WinUI

None

Environment

No response

NuGet package version(s)

No response

Affected platforms

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IDE

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IDE version

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Relevant plugins

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Anything else we need to know?

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