[cherrypick from #42349] [RL] Pass return_indexer_topk through chat completions and sessions - #42646

[cherrypick from #42349] [RL] Pass return_indexer_topk through chat completions and sessions#42646

guapisolo merged 2 commits into

sglang-milessgl-project/sglang:sglang-milesfrom

jiajun/sglang-miles-chat-session-return-indexer-topksgl-project/sglang:jiajun/sglang-miles-chat-session-return-indexer-topkCopy head branch name to clipboard