Add re-export of precompute_freqs_cis in comfy.ldm.lightricks.model to
maintain backward compatibility with custom nodes that import from the
old location. The function was moved to comfy.text_encoders.llama in a
January 2026 refactor, breaking custom nodes like ComfyUI-TeaCache,
ComfyUI-MagCache, and LightSpeed.
This shim allows existing custom nodes to continue working while
providing a clear deprecation notice for developers to update their
imports. The re-export will be removed in v2.0.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>