enhance set_stop_value_multi_ends and standardize the registration of some operators

[yuanlehome]

Motivation

修复一些自定义算子注册的不规范问题，需要使用PD_BUILD_STATIC_OP宏

Modifications

1. 一些自定义算子使用PD_BUILD_STATIC_OP注册
2. 优化set_stop_value_multi_ends算子处理eos token的逻辑
3. 限制paddleformers>=0.3.1

Usage or Command

无

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.
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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!