9f16b13843
…PC validation - Introduced full integration test suite for MCP controller, testing `POST /mcp` with valid and invalid payloads. - Added `@IsDefined` validation to ensure the `method` field is required in JSON-RPC requests. - Applied `RestApiExceptionFilter` to MCP controller for consistent error handling. - Enhanced validation pipe in MCP controller to whitelist and reject non-whitelisted properties. - Consolidated exception filters in SSOAuthController.