[wasi] Fixes to enable more tests (#82966)

[wasi] Fixes to enable more tests (#82966)

* [wasi] Copy WasmFilesToIncludeInFileSystem to the bundle too

This could be changed in the future to include in the single file bundle

* [wasi] Enable System.IO.Packaging, and System.Data.DataSetExtensions tests

* WasiAppBuilder: Create an empty /tmp

* Disable System.Runtime.Serialization.Xml.XsdDataContractExporterTests.ExporterTypesTests.TypesTest_Negative - Issue: https://github.com/dotnet/runtime/issues/82967

* Enable System.Runtime.Serialization.Xml.Tests, and System.Runtime.Serialization.Xml.ReflectionOnly.Tests

Remaining fixed by adding `/tmp`