Fixed batch_run accepting empty iterables

[its-nmt05]

Description

This PR addresses an issue in the batch_run method where parameters must be iterable and non-empty.

Changes

Added iterable and non-empty checks in _make_model_kwargs.
Updated batch_run to handle only valid parameters.

Issue Reference

Closes #2108

[github-actions]

Performance benchmarks:

Model	Size	Init time [95% CI]	Run time [95% CI]
Schelling	small	🔵 -0.9% [-1.2%, -0.6%]	🔵 -0.9% [-1.1%, -0.7%]
Schelling	large	🔵 -0.3% [-0.8%, +0.3%]	🔵 +1.0% [-1.5%, +3.7%]
WolfSheep	small	🔵 -0.1% [-0.2%, +0.1%]	🔵 +0.1% [-0.1%, +0.2%]
WolfSheep	large	🔵 +0.3% [-0.2%, +0.8%]	🔵 +0.6% [+0.0%, +1.2%]
BoidFlockers	small	🔵 -1.1% [-1.7%, -0.5%]	🔵 -1.0% [-1.8%, -0.2%]
BoidFlockers	large	🔵 -1.4% [-1.9%, -0.9%]	🔵 -1.0% [-1.9%, -0.1%]

[rht]

@its-nmt05 thank you for your contribution. Upon testing via the bank reserves example, I got this error

Traceback (most recent call last):
  File "/projectmesa/mesa-examples/examples/bank_reserves/batch_run.py", line 190, in <module>
    data = mesa.batch_run(
           ^^^^^^^^^^^^^^^
  File "/projectmesa/mesa/mesa/batchrunner.py", line 67, in batch_run
    data = process_func(run)
           ^^^^^^^^^^^^^^^^^
  File "/projectmesa/mesa/mesa/batchrunner.py", line 138, in _model_run_func
    model = model_cls(**kwargs)
            ^^^^^^^^^^^^^^^^^^^
  File "/projectmesa/mesa-examples/examples/bank_reserves/batch_run.py", line 157, in __init__
    for i in range(self.init_people):
             ^^^^^^^^^^^^^^^^^^^^^^^
TypeError: 'list' object cannot be interpreted as an integer

[rht]

It's because I intentionally set init_people to []. I think the correct handling should be to raise error instead of silently passing along the values. In the error message, you should say that if the param values is empty, it should be dropped altogether by the user by hand.

[EwoutH]

Yeah I agree, explicit is better than implicit.

We should also document which values we allow and which we don't (like an empty list or not).

[quaquel]

superseded by #2523