chore: Apply code review comments

src/Directory.Build.props

@@ -226,8 +226,6 @@
 
 		<!-- Required for studio -->
 		<NoWarn>$(NoWarn);UNO0008</NoWarn>
-
-		<NoWarn>$(NoWarn);NU1903</NoWarn>
 
 		<!-- On CI, UWP source is generated in a job running on Windows (CRLF EOLs). -->
 		<!-- When the artifacts are downloaded in a job running on Linux, IDE0055 will complain (expecting LF EOLs) -->

src/SourceGenerators/Uno.UI.SourceGenerators.Tests/Uno.UI.SourceGenerators.Tests.csproj

@@ -1,11 +1,11 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
 	<PropertyGroup>
 		<!-- There is no need to multi-target this test project -->
 		<!-- We keep it on the oldest supported TFM -->
 		<!-- Though we could use UnoTargetFrameworkOverride to choose between NetPrevious and NetCurrent -->
 		<!-- As of writing this comment, we don't see a need to do that, so we keep it simple -->
-		<TargetFramework>net9.0</TargetFramework>
+		<TargetFramework>$(NetCurrent)</TargetFramework>
 		<IsPackable>false</IsPackable>
 		<Nullable>enable</Nullable>
 		<ImplicitUsings>enable</ImplicitUsings>

src/Uno.UI.Tests/Uno.UI.Unit.Tests.csproj

@@ -12,10 +12,11 @@
 	</PropertyGroup>
 	<!--
 	Uncomment to troubleshoot source generation
-	-->
 	<PropertyGroup>
+		<UnoUISourceGeneratorDebuggerBreak>True</UnoUISourceGeneratorDebuggerBreak>
 		<EmitCompilerGeneratedFiles>true</EmitCompilerGeneratedFiles>
 	</PropertyGroup>
+	-->
 	<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
 		<DebugSymbols>true</DebugSymbols>
 		<DebugType>full</DebugType>

src/Uno.UI/Uno.UI.Tests.csproj

@@ -6,9 +6,6 @@
 	</PropertyGroup>
 
 	<Import Project="../targetframework-override.props" />
-	<PropertyGroup>
-		<EmitCompilerGeneratedFiles>true</EmitCompilerGeneratedFiles>
-	</PropertyGroup>
 
 	<PropertyGroup>
 		<AssemblyName>Uno.UI</AssemblyName>