[Graph Optimization] Fix IR graph dependency error exposed after enabling SOT by updating the return value of TextImageGatherScatter

[DrRyanHuang]

Motivation

text_image_gather_scatter 自定义算子部分未正确声明导致 SOT 转静后图依赖关系错误
该PR优先保证开启SOT后，多模 ERNIE-4.5-VL-28B-A3B-Paddle 能跑通

Modifications

主要是修改自定义算子 text_image_gather_scatter 返回值的逻辑

• 将 input 返回，（关键问题，否则计算图依赖关系会乱掉）
• 移除掉只读输入 text_index 和 image_index

Usage or Command

MODEL=/workspace/EB_MODELS/ERNIE-4.5-VL-28B-A3B-Paddle
rm -rf log/*
export FLAGS_cuda_graph_blacklist="custom_op.static_op_append_attention_with_output_"
export CUDA_VISIBLE_DEVICES=0
export PORT=39905

python -m fastdeploy.entrypoints.openai.api_server \
  --model $MODEL \
  --metrics-port 39717 \
  --port $PORT \
  --engine-worker-queue-port 39719 \
  --tensor-parallel-size 1 \
  --max-model-len 32768 \
  --max-num-seqs 128 \
  --quantization wint4 \
  --enable-mm \
  --graph-optimization-config '{"graph_opt_level": 1, "use_cudagraph": true, "full_cuda_graph": false}' \

Accuracy Tests

Checklist

• Add at least a tag in the PR title.
  • Tag list: [[FDConfig],[APIServer],[Engine], [Scheduler], [PD Disaggregation], [Executor], [Graph Optimization], [Speculative Decoding], [RL], [Models], [Quantization], [Loader], [OP], [KVCache], [DataProcessor], [BugFix], [Docs], [CI], [Optimization], [Feature], [Benchmark], [Others], [XPU], [HPU], [GCU], [DCU], [Iluvatar], [Metax]]
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• Add unit tests. Please write the reason in this PR if no unit tests.
• Provide accuracy results.
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[paddle-bot]

Thanks for your contribution!

[gongshaotian]

LGTM

[DrRyanHuang]

这个Commit是修复Code Style，做代码格式化的 0d46d6c

[gongshaotian]

LGTM