fix: remove the stream option of zhipu and gemini

[hjlarry]

Checklist:

Important

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• Please open an issue before creating a PR or link to an existing issue
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Description

Fixes #9301

and the gemini model with stream option also raise issue:

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update, included: Dify Document
• Improvement, including but not limited to code refactoring, performance optimization, and UI/UX improvement
• Dependency upgrade

Testing Instructions

test locally

• Test A
• Test B

[crazywoola]

• Link Modify model parameters in Spark LLMs and zhipuai LLMs #8078
• Link chore: massive update of the Gemini models based on latest documentation #8822
  The stream is introduced in these 2 prs.

[hjlarry]

• Link Modify model parameters in Spark LLMs and zhipuai LLMs #8078
• Link chore: massive update of the Gemini models based on latest documentation #8822
  The stream is introduced in these 2 prs.

the gemini's stream option was introduced in #8678 , and it's goal is to resolve the gemini not stream response, but not work, seems #9098 may resove this.