Fix for #1768

Motivation and Context

Change is needed because UrlElicitationRequiredError was not being propagated as an exception

How Has This Been Tested?

Tested with the examples/snippets indicated in the original issue. Also added a unit test for this case.

Breaking Changes

N/A

Types of changes

• [X ] Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• [ x] I have read the MCP Documentation
• [x ] My code follows the repository's style guidelines
• [x ] New and existing tests pass locally
• [ x] I have added appropriate error handling
• I have added or updated documentation as needed