Delete locations fix (#10672)

* Cleaner handling of inputs

* Fix for frontend form:

- Fix typo in field
- Better option defaults

* Tweak part category delete form

* Add frontend tests

src/backend/InvenTree/part/api.py

@@ -283,13 +283,11 @@ class CategoryDetail(CategoryMixin, OutputOptionsMixin, CustomRetrieveUpdateDest
 
     def destroy(self, request, *args, **kwargs):
         """Delete a Part category instance via the API."""
-        delete_parts = (
-            'delete_parts' in request.data and request.data['delete_parts'] == '1'
-        )
-        delete_child_categories = (
-            'delete_child_categories' in request.data
-            and request.data['delete_child_categories'] == '1'
+        delete_parts = str2bool(request.data.get('delete_parts', False))
+        delete_child_categories = str2bool(
+            request.data.get('delete_child_categories', False)
         )
+
         return super().destroy(
             request,
             *args,

src/backend/InvenTree/stock/api.py

@@ -431,8 +431,12 @@ class StockLocationDetail(
 
     def destroy(self, request, *args, **kwargs):
         """Delete a Stock location instance via the API."""
-        delete_stock_items = str(request.data.get('delete_stock_items', 0)) == '1'
-        delete_sub_locations = str(request.data.get('delete_sub_locations', 0)) == '1'
+        delete_stock_items = InvenTree.helpers.str2bool(
+            request.data.get('delete_stock_items', False)
+        )
+        delete_sub_locations = InvenTree.helpers.str2bool(
+            request.data.get('delete_sub_locations', False)
+        )
 
         return super().destroy(
             request,