support validationErrorMessage in rjsf enum w/ burnettk (#311)

Co-authored-by: jasquat <jasquat@users.noreply.github.com>

spiffworkflow-backend/src/spiffworkflow_backend/services/process_instance_processor.py

@@ -1,6 +1,7 @@
 # TODO: clean up this service for a clear distinction between it and the process_instance_service
 #   where this points to the pi service
 import decimal
+import uuid
 import json
 import logging
 import os
@@ -277,6 +278,7 @@ class CustomBpmnScriptEngine(PythonScriptEngine):  # type: ignore
             "sum": sum,
             "time": time,
             "timedelta": timedelta,
+            "uuid": uuid,
         }
 
         use_restricted_script_engine = True

spiffworkflow-frontend/src/rjsf/carbon_theme/SelectWidget/SelectWidget.tsx

@@ -53,9 +53,12 @@ function SelectWidget({
   let errorMessageForField = null;
   if (rawErrors && rawErrors.length > 0) {
     invalid = true;
-    // errorMessageForField = `${labelToUse.replace(/\*$/, '')} ${rawErrors[0]}`;
+    if ('validationErrorMessage' in schema) {
+      errorMessageForField = (schema as any).validationErrorMessage;
+    } else {
       errorMessageForField = rawErrors[0];
     }
+  }
 
   // ok. so in safari, the select widget showed the first option, whereas in chrome it forced you to select an option.
   // this change causes causes safari to act a little bit more like chrome, but it's different because we are actually adding