[RL] Support GLM MTP RL Model

[Deleter-D]

Motivation

💡 If this PR is a Cherry Pick, the PR title needs to follow the format by adding the [Cherry-Pick] label at the very beginning and appending the original PR ID at the end. For example, [Cherry-Pick][CI] Add check trigger and logic(#5191)

💡 如若此PR是Cherry Pick，PR标题需遵循格式，在最开始加上[Cherry-Pick]标签，以及最后面加上原PR ID，例如[Cherry-Pick][CI] Add check trigger and logic(#5191)
N/A

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]]
  • 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 16.66667% with 55 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (develop@08c4115). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
fastdeploy/rl/rollout_model.py	17.74%	50 Missing and 1 partial ⚠️
fastdeploy/model_executor/models/glm4_mtp.py	0.00%	4 Missing ⚠️

Additional details and impacted files

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  Coverage           ?   66.89%           
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  Files              ?      384           
  Lines              ?    50806           
  Branches           ?     7931           
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  Hits               ?    33989           
  Misses             ?    14336           
  Partials           ?     2481           

Flag	Coverage Δ
GPU	66.89% <16.66%> (?)

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[EmmonsCurse]

test_fusedmoe_ep_entry.py 偶发退出码 250 的情况，考虑到当前 GLM MTP RL Model 支持的需求优先级较高，如果决定合入，建议同步关注合入后的 CI 情况；一旦该问题对主流程产生影响，将优先跟进排查，并视情况及时修复或回滚相关改动。