fix geom_component._region_data()

[veenstrajelmer]

Issue addressed

Fixes #1079

Explanation

My steps:

• added the assertion of geom_component._region_data(), since calling that property shows the current bug (fails with IndexError: index 1 is out of bounds for axis 0 with size 1)
• solved the IndexError by properly generating total_bounds (was calling over the wrong dimension)
• this caused the error box() missing 3 required positional arguments: 'miny', 'maxx', and 'maxy' one line below
• solved by adding * to expand the total_bounds argument form a tuple into four separate arguments
• this resulted in shapely.errors.GeometryTypeError: Unknown geometry type: 'featurecollection' >> solved by generating the geodataframe like in test_model_set_geoms, but I have no clue if this results in the expected type/format. At least it works, but please check this
• made sure the assertion in the test also checked a valid result

General Checklist

• Updated tests or added new tests
• Branch is up to date with main
• Tests & pre-commit hooks pass
• Updated documentation >> not relevant
• Updated changelog.rst >> add later to avoid conflicts before this PR is merged, it can be something like "fixed geom_component._region_data() (fix geom_component._region_data() #1091)"

Data/Catalog checklist

• data/catalogs/predefined_catalogs.yml has not been modified.
• None of the old data_catalog.yml files have been chagned
• data/chagnelog.rst has been updated
• new file uses LF line endings (done automatically if you used update_versions.py)
• New file has been tested locally
• Tests have been added using the new file in the test suite

[savente93]

LGTM