Add missing `Args:` entries to scheduler docstrings (#14354)
Add missing Args entries to scheduler docstrings
Sixteen scheduler methods had Args: blocks that omitted parameters present
in the signature. Adds the missing entries:
- noise, on the DPMSolver single/multistep and cosine-multistep update
methods (required by the sde-* algorithm types)
- mu, on DPMSolverMultistep/Singlestep set_timesteps
- device, on CogVideoXDDIM and DDIMInverse set_timesteps
- sigma / sigma_next / sigma_before, on the Helios UniPC methods
Also corrects the rescale_zero_terminal_snr entry in scheduling_dpm_cogvideox,
which documented a `betas` parameter the function does not take (it takes
alphas_cumprod).
The scheduling_dpmsolver_multistep_inverse change is propagated by
make fix-copies, not hand-edited.
Documentation only; no behavior change.
