Fix#293
Also fixed a bug with initialization: properties must be declared before
the init block; otherwise, the initialization order is violated and an
NPE will occur in the init block.
## Motivation and Context
After initialization, MCP clients send a `logging/setLevel` request if
the logging capability is enabled. This request was previously not
handled, leading to an error that blocked the use of the MCP server in
the inspector and other clients.
## How Has This Been Tested?
Added integration test
## Breaking Changes
None
## 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](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [x] New and existing tests pass locally
- [x] I have added appropriate error handling
- [x] I have added or updated documentation as needed
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