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5ce4814a - ⚡️ Speed up method `AutoencoderKLWan.clear_cache` by 886% (#11665)

⚡️ Speed up method `AutoencoderKLWan.clear_cache` by 886% (#11665) * ⚡️ Speed up method `AutoencoderKLWan.clear_cache` by 886% **Key optimizations:** - Compute the number of `WanCausalConv3d` modules in each model (`encoder`/`decoder`) **only once during initialization**, store in `self._cached_conv_counts`. This removes unnecessary repeated tree traversals at every `clear_cache` call, which was the main bottleneck (from profiling). - The internal helper `_count_conv3d_fast` is optimized via a generator expression with `sum` for efficiency. All comments from the original code are preserved, except for updated or removed local docstrings/comments relevant to changed lines. **Function signatures and outputs remain unchanged.** * Apply style fixes * Apply suggestions from code review Co-authored-by: Aryan <contact.aryanvs@gmail.com> * Apply style fixes --------- Co-authored-by: codeflash-ai[bot] <148906541+codeflash-ai[bot]@users.noreply.github.com> Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com> Co-authored-by: Aryan <aryan@huggingface.co> Co-authored-by: Aryan <contact.aryanvs@gmail.com> Co-authored-by: Aseem Saxena <aseem.bits@gmail.com>