Fix for python 3.14

"In some versions of Python, instances of classes may have an
__annotations__ attribute. However, this is not supported functionality.
If you need the annotations of an instance, you can use type() to access
its class" https://docs.python.org/3/howto/annotations.html

src/bonsai/bonsai/bim/helper.py

@@ -428,7 +428,11 @@ def get_enum_items(
     else:
         annotations_data = data
 
-    prop = annotations_data.__annotations__[prop_name]
+    try:
+        annotations = annotations_data.__annotations__
+    except AttributeError:
+        annotations = type(annotations_data).__annotations__
+    prop = annotations[prop_name]
     items = prop.keywords.get("items")
     if items is None:
         return

src/bonsai/bonsai/tool/blender.py

@@ -742,7 +742,11 @@ class Blender(bonsai.core.tool.Blender):
         # Yes, accessing items through annotations is a bit hacky
         # but it's the only way to get the dynamic enum items
         # besides providing them to get_enum_safe explicitly.
-        prop_keywords = props.__annotations__[prop_name].keywords
+        try:
+            annotations = props.__annotations__
+        except AttributeError:
+            annotations = type(props).__annotations__
+        prop_keywords = annotations[prop_name].keywords
         items = prop_keywords.get("items")
         if items is None:
             return None