remove general regulations from regulation group library generated from active plan

This way there shouldn't be any chance a plan regulation group widget to be created from a general regulation,
preventing the case where the plan is counted as a plan feature linked to a regulation group. This change is also
a fix in itself because it shouldn't be possible to assign general regulations for plan features.

Author: nmaarnio

arho_feature_template/core/plan_manager.py

@@ -441,13 +441,18 @@ def unload(self):
 def regulation_group_library_from_active_plan() -> RegulationGroupLibrary:
     category_features = list(PlanRegulationGroupTypeLayer.get_features())
     category_id_to_name: dict[str, str] = {category["id"]: category["name"][LANGUAGE] for category in category_features}
+
+    # Exclude general regulations from the library
     category_regulation_group_map: dict[str, list[QgsFeature]] = {
-        feature["name"][LANGUAGE]: [] for feature in category_features
+        feature["name"][LANGUAGE]: [] for feature in category_features if feature["value"] != "generalRegulations"
     }
 
     for feat in RegulationGroupLayer.get_features():
         name = category_id_to_name[feat["type_of_plan_regulation_group_id"]]
-        category_regulation_group_map[name].append(feat)
+        feat_list = category_regulation_group_map.get(name)
+        if type(feat_list) is list:
+            feat_list.append(feat)
+
     return RegulationGroupLibrary(
         name="Käytössä olevat kaavamääräysryhmät",
         version=None,