Some custom nodes broken after Jan 5, 2026 updates (comfy.ldm.lightricks.model)

### Custom Node Testing

- [x] I have tried disabling custom nodes and the issue persists (see [how to disable custom nodes](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled) if you need help)

### Expected Behavior

-

### Actual Behavior

-

### Steps to Reproduce

At least two nodes stopped working: ComfyUI-TeaCache and ComfyUI-MagCache.
The error when starting ComfyUI is the same:

**ComfyUI-MagCache:**
```
Traceback (most recent call last):
File "D:\ComfyUI\ComfyUI\nodes.py", line 2155, in load_custom_node
module_spec.loader.exec_module(module)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^
File "", line 1027, in exec_module
File "", line 488, in _call_with_frames_removed
File "D:\ComfyUI\ComfyUI\custom_nodes\ComfyUI-MagCache\__init__.py", line 1, in
from .nodes import NODE_CLASS_MAPPINGS as NODES_CLASS, NODE_DISPLAY_NAME_MAPPINGS as NODES_DISPLAY
File "D:\ComfyUI\ComfyUI\custom_nodes\ComfyUI-MagCache\nodes.py", line 13, in
from comfy.ldm.lightricks.model import precompute_freqs_cis
ImportError: cannot import name 'precompute_freqs_cis' from 'comfy.ldm.lightricks.model' (D:\ComfyUI\ComfyUI\comfy\ldm\lightricks\model.py)
```

**ComfyUI-TeaCache:**
```
Traceback (most recent call last):
File "D:\ComfyUI\ComfyUI\nodes.py", line 2155, in load_custom_node
module_spec.loader.exec_module(module)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^
File "", line 1027, in exec_module
File "", line 488, in _call_with_frames_removed
File "D:\ComfyUI\ComfyUI\custom_nodes\teacache\__init__.py", line 1, in
from .nodes import NODE_CLASS_MAPPINGS as NODES_CLASS, NODE_DISPLAY_NAME_MAPPINGS as NODES_DISPLAY
File "D:\ComfyUI\ComfyUI\custom_nodes\teacache\nodes.py", line 12, in
from comfy.ldm.lightricks.model import precompute_freqs_cis
ImportError: cannot import name 'precompute_freqs_cis' from 'comfy.ldm.lightricks.model' (D:\ComfyUI\ComfyUI\comfy\ldm\lightricks\model.py)
```

### Debug Logs

```powershell
-
```

### Other

_No response_