Quarantine test that caused test abort (#21113)

src/Servers/Kestrel/test/InMemory.FunctionalTests/RequestTests.cs

@@ -559,6 +559,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.InMemory.FunctionalTests
         }
 
         [Fact]
+        [QuarantinedTest]
         public async Task TraceIdentifierIsUnique()
         {
             const int identifierLength = 22;