Error out when call ControlBurnRegressor.fit_cv

[pennyyan0608]

Error out at ControlBurn/ControlBurnModel.py line 1829:
ValueError: setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2495,) + inhomogeneous part.

My numpy version is 1.26. It doesn't support np.array(feats_all) if elements in feats_all have different length.
I have created a pull request. Could you please take a look at this? Thanks.