[Cherry-pick][Optimization] enable trtllm_all_reduce fusion kernel in glm model

[BingooYang]

Motivation

FD接入trtllm_allreduce_fusion算子

Modifications

1. FD新增flashinfer allreduce fusion算子接入
2. 更改GLM-Air-4.5模型组网结构接入trtllm_allreduce_fusion算子（默认不开启）
3. 新增命令行参数--enable-flashinfer-allreduce-fusion，通过该参数来使能trtllm_allreduce_fusion
4. 新增trtllm_allreduce_fusion算子单测
5. 将def has_flashinfer()函数挪动到utils.py中

Usage or Command

H卡和B卡本地测试均通过
python -m fastdeploy.entrypoints.openai.api_server --model /root/paddlejob/workspace/bingoo/model/GLM-4.5-Air --tensor-parallel-size 4 --port 8185 --max-num-batched-tokens 2048 --enable-flashinfer-allreduce-fusion

Accuracy Tests

python -m paddle.distributed.launch --gpus=0,1 ./FastDeploy/tests/layers/test_rms_allreduce_fusion.py

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]]
  • You can add new tags based on the PR content, but the semantics must be clear.
• Format your code, run pre-commit before commit.
• Add unit tests. Please write the reason in this PR if no unit tests.
• Provide accuracy results.
• If the current PR is submitting to the release branch, make sure the PR has been submitted to the develop branch, then cherry-pick it to the release branch with the [Cherry-Pick] PR tag.

[paddle-bot]

Thanks for your contribution!

[codecov-commenter]

Codecov Report

❌ Patch coverage is 51.00000% with 49 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (release/2.6@b24765a). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
...oy/model_executor/layers/flashinfer_comm_fusion.py	43.37%	38 Missing and 9 partials ⚠️
fastdeploy/model_executor/layers/normalization.py	50.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@              Coverage Diff               @@
##             release/2.6    #7228   +/-   ##
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  Coverage               ?   73.22%           
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  Files                  ?      377           
  Lines                  ?    52980           
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  Hits                   ?    38796           
  Misses                 ?    11466           
  Partials               ?     2718           

Flag	Coverage Δ
GPU	73.22% <51.00%> (?)

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