fixed issue where the "return_train_score" parameter is not passed

[Nelsaur]

Related Issue or bug

The "return_train_score" parameter is not passed correctly

Closes #3839

Describe the changes you've made

I added the return_train_score parameter to a few function calls

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, local variables)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

I've ran the following:

import pycaret
from pycaret.datasets import get_data
from pycaret.regression import *
from pycaret.regression import RegressionExperiment
from pycaret.regression import tune_model

data = get_data('insurance')
s = setup(data, target = 'charges', session_id = 123)
exp = RegressionExperiment()
exp.setup(data, target = 'charges', session_id = 123, use_gpu=True)
new_model = create_model('gbr', return_train_score=True)
tuned_model, all_params = tune_model(estimator=new_model, return_train_score=True, verbose=True, tuner_verbose=True, return_tuner=True)

assert "split0_train_score" in all_params.cv_results_

Describe if there is any unusual behaviour of your code(Write NA if there isn't)

NA

Checklist:

• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.
• Any dependent changes have been merged and published in downstream modules.

Screenshots

Original	Updated

[Yard1]

Thanks!