fix: undefined variable in conditioning warning

[Mr-Neutr0n]

Bug

Variable cbs is referenced in a warning message but not defined in that scope, causing a NameError when the warning is triggered.

In both cldm/ddim_hacked.py and ldm/models/diffusion/ddim.py, the elif isinstance(conditioning, list) branch references cbs in its warning print statement, but cbs is only defined in the preceding if isinstance(conditioning, dict) branch. When conditioning is a list and a batch size mismatch occurs, this raises a NameError.

Fix

Replaced cbs with ctmp.shape[0] in the list conditioning branch, which is the correct value from the loop variable already being checked in the condition.