[Graph Optimization]1.fix the bug of draft model with ep 2.fix sampler bug

[gongshaotian]

Motivation

1. Unified EP Parallel and CUDAGraph Flag
2. Add a parameter to reject all draft tokens, so that the draft model can capture CUDAGraphs with token num of 1.
3. Fix the CUDAGraph + MTP bug introduced by c234b99

Modifications

Modified了 dummy_run、sampler

Usage or Command

Pass

Accuracy Tests

Pass

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!

[gongshaotian]

本地 pre-commit 存在bug，暂时没法 format