Fix native AOT outerloops (#122213)

We're now getting a linker crash.

Author: MichalStrehovsky

src/libraries/tests.proj

@@ -399,6 +399,10 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(TestNativeAot)' == 'true' and '$(RunDisabledNativeAotTests)' != 'true'">
+    <!-- https://github.com/dotnet/runtime/issues/119380 -->
+    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Text.Json\tests\System.Text.Json.SourceGeneration.Tests\System.Text.Json.SourceGeneration.Roslyn4.4.Tests.csproj"
+                      Condition="'$(TargetOS)' == 'osx' and '$(TargetArchitecture)' == 'arm64'" />
+
     <!-- https://github.com/dotnet/runtime/issues/108274 -->
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Collections.Immutable\tests\System.Collections.Immutable.Tests.csproj" />