Throw client error when use Gemini (Gemini-1.0-pro-vision-latest) provider with AI assistant

Problem/Motivation

When I tried to use Gemini-1.0-pro-vision in an AI assistant under the provider configuration in CKEditor. But I'm getting a client error

Steps to reproduce

1) Install gemini_provider with AI module
2) Configure with API key
3) Select 'Gemini - Gemini 1.0 Pro Vision' AI provider in CKeditor Plugin setting
4) Tried with AI Assistant in CKEditor, but it throws the following Client error
Error invoking model response: Client error: `POST https://generativelanguage.googleapis.com/v1/models/gemini-1.0-pro-vision-latest:streamGenerateContent` resulted in a `404 Not Found` response

Proposed resolution

- It's working with other gemini models like Gemini - Gemini 1.5 Pro, Gemini - Gemini 1.5 Flash, Gemini - Gemini 2.0 Flash, Gemini - Gemini 2.0 Flash-Lite
- Only not working with Gemini - Gemini 1.0 Pro Vision model

Remaining tasks

User interface changes

API changes

Data model changes