[Iluvatar][CI] Fix moe_expert_dispatch cannot support dequant_scale

[wuyujiji]

Motivation

修复由ae7bee8#diff-2b72daca3c1fd472abc5b49035a2b8229f76e939202a1935777eecf9f52976c0 该commit产生的返回值dequant_scale报错的问题

Modifications

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Usage or Command

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Accuracy Tests

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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!