Handle requests for capabilty, when capability not present

[johnkors]

ex: Claude Desktop polls for /resources/list even though resources is missing from the capabilities

Motivation and Context

Some clients ignore the capabilities, and sends <capability>/list requests regardless (ex: Claude Desktop).

This PR

• ensures the server does not log this as an Error log statement
• notifies the client about the bad request using a notification message, instead of returning an error messages

How Has This Been Tested?

Use Claude Desktop

• Verify that my server does not log errors when connect to Claude.

Breaking Changes

No

Types of changes

• 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

• I have read the MCP Documentation
• My code follows the repository's style guidelines
• New and existing tests pass locally (I don't have full framework, who does??)
• I have added appropriate error handling
• I have added or updated documentation as needed

Additional context