Issue #1343 hfb dump

[JoerivanEngelen]

Fixes #1343

Description

• Fix crash when calling GroundwaterFlowModel.dump when a HFB was assigned to the model
• Really encode HFB as string this time when calling to_netcdf...
• Move MDAL/GDAL logic to Package.to_netcdf, which is a more logical place for it then in Model.dump. This has the advantage that this stuff is automatically not done when we override the method for the HFB package, as the MDAL/CRS stuff is irrelevant for HFBs.
• Drop node_dim from UGRID dataset if present, it still remains available in the grid topology.
• Ensure non-scalar data not loaded into memory when calling from_file.

Checklist

• Links to correct issue
• Update changelog, if changes affect users
• PR title starts with Issue #nr, e.g. Issue #737
• Unit tests were added
• If feature added: Added/extended example

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud