refactor(image): Explicitly cast array returns

[briangreunke]

Summary

This refactoring explicitly casts the return types of methods within the Image class that return NumPy arrays.

Conventional Commit Breakdown

• Type: refactor
• Scope: image
• Subject: Explicitly cast array returns

Key Changes

• dreadnode/data_types/image.py:
  • Added t.cast to explicitly type the return of the array property as np.ndarray[t.Any, np.dtype[np.float32]].
  • Added t.cast to explicitly type the return of the private _to_array method as np.ndarray[t.Any, t.Any].

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Generated Summary:

• Improved type hints for return values in the Image class methods.
• Changed return type casts to use np.ndarray with specific dtype for safety and clarity.
• Maintained existing functionality while enhancing type-checking capabilities.
• Ensures better compatibility with static type checkers.

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