Ensure endpoints are returned when alternate url port does not match

Proposed changes

Ensure endpoints are returned even if the client url port do not match (similar to client)
Improve endpoint tests

Related Issues

Fixes #2361

Types of changes

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[x] Bugfix (non-breaking change which fixes an issue)
[ ] Enhancement (non-breaking change which adds functionality)
[x] Test enhancement (non-breaking change to increase test coverage)
[ ] Breaking change (fix or feature that would cause existing functionality to not work as expected, requires version increase of Nuget packages)
[ ] Documentation Update (if none of the other choices apply)

Checklist

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[x] I have read the CONTRIBUTING doc.
[x] I have signed the CLA.
[ ] I ran tests locally with my changes, all passed.
[ ] I fixed all failing tests in the CI pipelines.
[ ] I fixed all introduced issues with CodeQL and LGTM.
[ ] I have added tests that prove my fix is effective or that my feature works and increased code coverage.
[ ] I have added necessary documentation (if appropriate).
[ ] Any dependent changes have been merged and published in downstream modules.

Further comments

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Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (2b9d8f9) 53.81% compared to head (d15011c) 53.97%.

Files	Patch %	Lines
Libraries/Opc.Ua.Client/CoreClientUtils.cs	50.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #2511 +/- ## ========================================== + Coverage 53.81% 53.97% +0.16% ========================================== Files 334 334 Lines 64409 64424 +15 Branches 13235 13239 +4 ========================================== + Hits 34663 34775 +112 + Misses 25990 25903 -87 + Partials 3756 3746 -10 ```

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OPCFoundation / UA-.NETStandard