fix: Resolve MRO for _InputFile

[hpohekar]

closes #3775

Do not modify the class hierarchy dynamically which results in MRO conflicts.

Resolved - https://github.com/ansys/pyfluent/actions/runs/13513445674/job/37757855348

Latest workflow run - https://github.com/ansys/pyfluent/actions/runs/13520508995/job/37778526002

[mkundu1]

@hpohekar Should we fix this in the codegen-side in a later version, so that file-like arguments are derived from classes having the file upload/download behaviour and avoid any runtime manipulation of the instances? We do something similar in flobject.py.

I'm approving the current PR as this looks to be an urgent fix that must go in for pyconsole.

[hpohekar]

@hpohekar Should we fix this in the codegen-side in a later version, so that file-like arguments are derived from classes having the file upload/download behaviour and avoid any runtime manipulation of the instances? We do something similar in flobject.py.

I'm approving the current PR as this looks to be an urgent fix that must go in for pyconsole.

@mkundu1 Yes, I agree because this is not happening in settings side. i.e. flobject.py