add safetySettings, set block_none

[ccoder64]

Description

add safetySettings strategy, fix error

Error: [GoogleGenerativeAI Error]: Text not available. Response was blocked due to SAFETY
    at response.text (file:///usr/src/node_modules/.pnpm/@fuyun+generative-ai@0.1.3/node_modules/@fuyun/generative-ai/dist/index.mjs:259:19)
    at Object.start (file:///usr/src/dist/server/chunks/pages/generate.ts.2a0d54ba.mjs:47:34)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
sendMessageStream() was unsuccessful. Response was blocked due to SAFETY. Inspect response object for details.

test case 【讲个笑话】

Linked Issues

https://github.com/babaohuang/GeminiProChat/issues/130 https://github.com/babaohuang/GeminiProChat/issues/74

Additional context

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🔨 Latest commit	3d3447c408cd81ea69917f620915750c0a4cd3a1

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[babaohuang]

不好意思，最近事情有点多，现在才看到PR消息，请问您这个加入以后有测试一下看看吗，我之前有尝试过加这些参数，但是报错了

[ccoder64]

不好意思，最近事情有点多，现在才看到PR消息，请问您这个加入以后有测试一下看看吗，我之前有尝试过加这些参数，但是报错了

嗯，抱歉忘记看了，有验证过可以正常生效