Fix DeepSeek-OCR for Transformers v4

[hmellor]

Fixes DeepSeek-OCR for Transformers v4 which was resetting model_type to deepseek_vl_v2 in super().__init__(**kwargs)

[claude]

Claude Code Review

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[gemini-code-assist]

Code Review

The pull request refactors the DeepseekVLV2Config class by streamlining the init method, specifically inlining the extraction of sub-configs and updating the logic for model_type and architectures. Feedback identifies potential TypeError vulnerabilities when handling None values within kwargs for architectures and configuration keys, recommending more robust dictionary access patterns.

[mergify]

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