XML ADO provider cannot handle paths with embedded relative paths.

[DaveRMaltby]

For example:
C:\Dev\MockDB\Tests\Integration.RemoteFileBasedTables.ClientCodeGeneration\bin\Debug\net7.0**../../../**Sources/GettingStartedWithData.xml
was failing.

Workaround:
Use Path.GetFullPath() method which removes the embedded relative paths and results in a path of:
C:\Dev\MockDB\Tests\Integration.RemoteFileBasedTables.ClientCodeGeneration\Sources/GettingStartedWithData.xml

Fix:
Call Path.GetFullPath() in provider.