More precise CPU instruction set specification for ASP.NET composite (#47207)

Based on offline feedback I have modified build of the ASP.NET
composite image to explicitly specify the following instruction
set extensions per Tanner's suggestion:

+x86-x64-v3

With this change, the composite image is about 500 KB longer -
before the change its length was 33_392_640 B, after the change
it's 33_832_960. As we're now working with the partial composite
that reduced the previous publishing size by about 30~40 MB, hopefully
this shouldn't be much of a concern.

Thanks

Tomas

Author: trylek

src/Framework/App.Runtime/src/Microsoft.AspNetCore.App.Runtime.csproj

@@ -489,6 +489,7 @@ This package is an internal implementation of the .NET Core SDK and is not meant
       <ManagedAssetsFullPath>$(RuntimePackageRoot)$(ManagedAssetsPackagePath)</ManagedAssetsFullPath>
       <NativeAssetsFullPath>$(RuntimePackageRoot)$(NativeAssetsPackagePath)</NativeAssetsFullPath>
       <PartialCompositeAssemblyListPath>$(MSBuildThisFileDirectory)\PartialCompositeAssemblyList.txt</PartialCompositeAssemblyListPath>
+      <InstructionSetSupport Condition="'$(TargetArchitecture)' == 'x64' or '$(TargetArchitecture)' == 'x86'">+x86-x64-v3</InstructionSetSupport>
     </PropertyGroup>
 
     <RemoveDir Directories="$(CompositeTargetDir)" />
@@ -515,6 +516,7 @@ This package is an internal implementation of the .NET Core SDK and is not meant
     <WriteLinesToFile File="$(CompositeResponseFile)" Lines="-u:&quot;%(UnrootedAssemblyPaths.Identity)&quot;" Overwrite="false" />
     <WriteLinesToFile File="$(CompositeResponseFile)" Lines="&quot;%(PartialCompositeAssemblyPaths.Identity)&quot;" Overwrite="false" />
     <WriteLinesToFile File="$(CompositeResponseFile)" Lines="--out:&quot;$(CompositeTargetDir)$(CompositeFileName).dll&quot;" Overwrite="false" />
+    <WriteLinesToFile File="$(CompositeResponseFile)" Lines="--instruction-set:$(InstructionSetSupport)" Overwrite="false" Condition="'$(InstructionSetSupport)' != ''" />
 
     <ItemGroup>
       <NativeSharedObjects Include="$(NativeAssetsFullPath)\*.so" />