compat: add backward compatibility to support old model parameters

[wangshankun]

No description provided.

[gemini-code-assist]

Summary of Changes

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This pull request improves the backward compatibility of the audio scheduler by making the infer_steps parameter handling more robust. It allows the prepare method to gracefully handle scenarios where infer_steps might not be explicitly passed, ensuring that older model configurations can continue to operate correctly by falling back to the default value defined in the model's configuration.

Highlights

• Backward Compatibility for infer_steps: Removed the direct initialization of self.infer_steps from the __init__ method of the scheduler.
• Flexible prepare method: Modified the prepare method to accept infer_steps as an optional parameter, ensuring that if it's not provided, the value from the configuration (self.config["infer_steps"]) is used instead.

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Changelog

• lightx2v/models/schedulers/wan/audio/scheduler.py
  • Removed the self.infer_steps attribute initialization from the __init__ method.
  • Updated the prepare method signature to make infer_steps an optional argument with a default value of None.
  • Added conditional logic within the prepare method to use the provided infer_steps or retrieve it from self.config if not explicitly passed.

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[gemini-code-assist]

Code Review

This pull request refactors the EulerScheduler to allow infer_steps to be specified at runtime via the prepare method, falling back to the configuration value if not provided. This increases the flexibility of the scheduler. The changes are logical, and I have a minor suggestion to improve code conciseness.

[gemini-code-assist]

For conciseness, you can simplify this if-else block into a single line using a conditional expression.

        self.infer_steps = infer_steps if infer_steps is not None else self.config["infer_steps"]