[model] update minicpmo 4_5

[Jintao-Huang]

#9147

[gemini-code-assist]

Code Review

This pull request updates documentation links and command-line parameter descriptions for the minicpmo model, notably changing the default value of INIT_AUDIO to True. In the code, _get_vision_embedding was updated to handle empty inputs and tensor type checks more robustly. Additionally, the template logic for minicpm was adjusted to handle video tags based on audio usage settings. A review comment suggests adding parentheses to a logical expression in swift/template/templates/minicpm.py to clarify operator precedence and improve readability.