Mark RuntimeEventSourceTest as GCStressIncompatible (dotnet#18911)

Author: echesakov

tests/src/tracing/runtimeeventsource/runtimeeventsource.csproj

@@ -13,6 +13,7 @@
     <DefineConstants>$(DefineConstants);STATIC</DefineConstants>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <CLRTestPriority>0</CLRTestPriority>
+    <GCStressIncompatible>true</GCStressIncompatible>
   </PropertyGroup>
   <!-- Default configurations to help VS understand the configurations -->
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">