ContainEquivalentOf doesn't pass tracing to the assertion output

`WithTracing` without using a `ITraceWriter` is broken in combination with `ContainEquivalentOf` because the latter [discards](https://github.com/fluentassertions/fluentassertions/blob/6846f7f49c322e561bc25c3d9756e1b7cef50782/Src/FluentAssertions/Collections/GenericCollectionAssertions.cs#L867) the results of the nested call to the `EquivalencyValidator`