Only process annotated function parameters

[kylelutze]

Currently a mcp tool call will attempt to deserialize all function parameters, regardless of if they are annotated with @ToolParam or @McpToolParam. This makes it impossible to use other Spring annotations such as @AuthenticationPrincipal.

Just like @RestController and @GetMapping, etc. it should only process function parameters that are annotated appropriately.

Environment:
spring-ai-starter-mcp-server-webmvc:1.1.0-M2
running a stateless mcp server.