[Quantization] Support w4afp8 MoE dynamic quant

[Sunny-bot1]

Motivation

Modifications

Usage or Command

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]]
  • 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 8.14815% with 124 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (develop@0edda75). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
fastdeploy/model_executor/layers/utils.py	9.37%	87 Missing ⚠️
...l_executor/layers/moe/fused_moe_cutlass_backend.py	3.44%	28 Missing ⚠️
...loy/model_executor/layers/quantization/__init__.py	0.00%	5 Missing and 1 partial ⚠️
...eploy/model_executor/layers/quantization/w4afp8.py	25.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             develop    #5176   +/-   ##
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  Coverage           ?   57.44%           
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  Files              ?      317           
  Lines              ?    38568           
  Branches           ?     5779           
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  Hits               ?    22157           
  Misses             ?    14632           
  Partials           ?     1779           

Flag	Coverage Δ
diff	57.44% <8.14%> (?)

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