Run `onnxruntime_provider_test` with `example_plugin_ep` in CI (#26214)
### Description
<!-- Describe your changes. -->
- Add test dynamic plugin EP configuration setting to skip specific
tests.
- Run test in x64 Windows Release CI build.
### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->
Enable more testing of plugin EP in CI build.