KeyError Due to formatted_text Key
[This line](https://github.com/mjordan/islandora_workbench/blob/b2fd24cc03321dd3a5aa3f677a913c2cf134520d/workbench_fields.py#L189C22-L189C80) causes a KeyError as it doesn't check for the existence of the `'formatted_text'` key in the `field_name` dictionary. We can instead change it to 

```python
if 'formatted_text' in field_definitions[field_name] and field_definitions[field_name]['formatted_text'] is True:
```
diff --git a/workbench_fields.py b/workbench_fields.py
index 8225bfd..a3c85dc 100644
--- a/workbench_fields.py
+++ b/workbench_fields.py
@@ -186,7 +186,7 @@ class SimpleField():
                     entity[field_name] = field_values
                 else:
                     row[field_name] = truncate_csv_value(field_name, row['node_id'], field_definitions[field_name], row[field_name])
-                    if field_definitions[field_name]['formatted_text'] is True:
+                    if 'formatted_text' in field_definitions[field_name] and field_definitions[field_name]['formatted_text'] is True:
                         entity[field_name] = [{'value': row[field_name], 'format': text_format}]
                     else:
                         entity[field_name] = [{'value': row[field_name]}]
['workbench_fields.py']