show that hiding nested fields works as well

spiffworkflow-backend/tests/data/dynamic_enum_select_fields/color_question.json

@@ -17,6 +17,14 @@
     "veryImportantFieldButOnlySometimes": {
       "title": "Very important field",
       "type": "string"
+    },
+    "building": {
+      "properties": {
+        "floor": {
+          "title": "Floor",
+          "type": "number"
+        }
+      }
     }
   }
 }

spiffworkflow-backend/tests/data/dynamic_enum_select_fields/dynamic_enums_ask_for_color.bpmn

@@ -14,7 +14,7 @@
       <bpmn:incoming>Flow_1my9ag5</bpmn:incoming>
       <bpmn:outgoing>Flow_0b04rbg</bpmn:outgoing>
       <bpmn:script>awesome_color_options = [{"value": "blue", "label": "Blue"}, {"value": "green", "label": "Green"}]
-form_ui_hidden_fields = ["veryImportantFieldButOnlySometimes"]
+form_ui_hidden_fields = ["veryImportantFieldButOnlySometimes", "building.floor"]
     </bpmn:script>
     </bpmn:scriptTask>
     <bpmn:userTask id="Activity_1gqykqt" name="ask user for color">

spiffworkflow-backend/tests/spiffworkflow_backend/integration/test_process_api.py

@@ -1686,8 +1686,13 @@ class TestProcessApi(BaseTest):
             response.json["form_schema"]["definitions"]["Color"]["anyOf"][1]["title"]
             == "Green"
         )
+
+        # if you set this in task data:
+        #   form_ui_hidden_fields = ["veryImportantFieldButOnlySometimes", "building.floor"]
+        # you will get this ui schema:
         assert response.json["form_ui_schema"] == {
-            "veryImportantFieldButOnlySometimes": {"ui:widget": "hidden"}
+            "building": {"floor": {"ui:widget": "hidden"}},
+            "veryImportantFieldButOnlySometimes": {"ui:widget": "hidden"},
         }
 
     def test_process_instance_list_with_default_list(