Keyword IACTIVE in the iMOD5 PRJ file is not supported

[FransRoelofsen]

Description
A minor bug.
Each package in the PRJ file has the same header: N,TOPIC,IACTIVE. E.g. 0001,(RIV),1, RIVERS
Keyword IACTIVE determines if the package is (de)activated for the simulation.
in the current release, IACTIVE = 0 is not supported.

Important practical use of this keyword is to speed up the preprocessing from a PRJ file. For instance leaving out the RIV or WEL package in case a package contains extended time series.

Suggestion for Issue handling
The fix should probably be made in function imod.formats.prj.open_projectfile_data.
It is not a killing bug, alternative is to remove the particular package by hand from the dictionary returned by the same function imod.formats.prj.open_projectfile_data.

[JoerivanEngelen]

This is indeed missing functionality. You labeled this as "Won't fix". Fine by me, but at minimum, we can add this as a Known Issue to the Documentation.