[Cherry-pick to release/v0.5.13] fix: DSV4 BCG compress-prefill plan OOB on underfilled (tiny) prefill replay (#27747) - #27864

[Cherry-pick to release/v0.5.13] fix: DSV4 BCG compress-prefill plan OOB on underfilled (tiny) prefill replay (#27747)#27864

Fridge003 merged 1 commit into

release/v0.5.13sgl-project/sglang:release/v0.5.13from

cherry-pick/f8b0a120b8-to-v0.5.13-5c21c343sgl-project/sglang:cherry-pick/f8b0a120b8-to-v0.5.13-5c21c343Copy head branch name to clipboard