Spring AI Improve heuristics and strategy for handling duplicate tool names

See discussion on https://github.com/spring-projects/spring-ai/pull/4338

Comment From: colommar

@markpollack hi! So what is actually encouraged in the 1.1.0.M2 milestone? Maybe adding a suffix(like a AtomicInteger counting all the name while checking the list of the name) while the name is reapeated which also meets the need of the corner case(when autoconfig is down)

I'd like to have a try!