Test failure: DataContractSerializerTests.DCS_BasicPerSerializerRoundTripAndCompare_InheritedFromIList

**Failed in:** [runtime-coreclr crossgen2 20260606.1](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1452930)

**Failed tests:**
```
net11.0-windows-Release-x64-TestReadyToRun_Release-Windows.Server2025.Amd64.Open
- DataContractSerializerTests.DCS_BasicPerSerializerRoundTripAndCompare_InheritedFromIList

```

**Error message:**
```
XML comparison is also failing
Test failed for input: SerializationTestTypes.ObjectContainer
Expected: <_data i:type="a:SerializationTestTypes.SampleListExplicitWithoutDC***" xmlns:a="http://schemas.datacontract.org/2004/07/SerializationTestTypes.SampleListExplicitWithoutDC***">0001-01-01T00:00:00P10675199DT2H48M5.4775807S1.7976931348623157E+308-INF0c9e174e-cdd8-4b68-a70d-aaeb26c7deeb<_data2 i:type="a:SerializationTestTypes.SampleListExplicitWithoutDC***" xmlns:a="http://schemas.datacontract.org/2004/07/SerializationTestTypes.SampleListExplicitWithoutDC***">0001-01-01T00:00:00P10675199DT2H48M5.4775807S1.7976931348623157E+308-INF0c9e174e-cdd8-4b68-a70d-aaeb26c7deeb
Actual: <_data/><_data2/>
```

**Stack trace:**
```
at System.Runtime.Serialization.Tests.DataContractSerializerHelper.SerializeAndDeserialize[T](T value, String baseline, DataContractSerializerSettings settings, Func`1 serializerFactory, Boolean skipStringCompare, Boolean verifyBinaryRoundTrip) in /_/src/libraries/Common/tests/System/Runtime/Serialization/DataContractSerializerHelper.cs:line 37
at DataContractSerializerTests.TestObjectInObjectContainerWithSimpleResolver[T](T o, String baseline, Boolean skipStringCompare) in /_/src/libraries/System.Runtime.Serialization.Xml/tests/DataContractSerializer.cs:line 4696
at DataContractSerializerTests.DCS_BasicPerSerializerRoundTripAndCompare_InheritedFromIList() in /_/src/libraries/System.Runtime.Serialization.Xml/tests/DataContractSerializer.cs:line 3703
at System.Reflection.MethodBaseInvoker.InterpretedInvoke_Method(Object obj, IntPtr* args)
at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)
```