fix(gemini): gemini tool_call part position

[N3kox]

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fix

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fix(gemini): assistant message 通过 convSchemaMessage 还原为 candidate parts 时，tool call part 所在位置问题

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• en: This PR fixes the order of tool call parts in the convSchemaMessage function. Previously, tool call parts were added at the beginning of the content parts list, which could cause issues with Gemini API expectations. Now tool call parts are properly placed after media parts (when using AssistantGenMultiContent ) or after text parts (when using Content ). This ensures compatibility with Gemini's expected message format.

• zh(optional): 此 PR 修复了 convSchemaMessage 函数中 tool call 部分的顺序问题。之前，tool call 部分被添加到 content parts 列表的开头，这可能导致与 Gemini API 期望不兼容的问题。现在，tool call 部分被正确地放置在 media 部分之后（当使用 AssistantGenMultiContent 时）或 text 部分之后（当使用 Content 时）。这确保了与 Gemini 期望的消息格式的兼容性。

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The following modules have changes and may need version updates:

• components/model/gemini (Current: components/model/gemini/v0.1.28)

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