Spring-ai Set redis query limit to match requested topK used in KNN search

The Jedis Query object sets limit to 10 by default. This fix aligns limit with topK requested.

Fixes https://github.com/spring-projects/spring-ai/issues/1415

Comment From: markpollack

merged in 439934b0f6a42ec99bcbf644f58152af2fe0ea5c