Example IC not compatible with SWIFT 2025

[TimGoTheCreator]

The DemoImpactInitCond WoMa v1.2 example is not compatible with SWIFT 2025,
When you run make_impact_init_cond.py and make a ic and load it with 2025 swift it shows an error:
"

Warning: some required field names for initial conditions were tweaked in July 2024 to match the GADGET-2 format that SWIFT follows. Please update your scripts (e.g. download the latest WoMa package) to match. Apologies for any inconvenience

[00009.1] single_io.c:read_array_single():101: Compulsory data set 'Entropies' not present in the file.
"
it still works with other versions but is in uncompatible with new ones, however an update will be useful to new users that want an "out of the box" experience compared to the original IC thats shipped by Kegerreis.

[MatthieuSchaller]

@jkeger could you have a look a this?