Better error handling to skip non-standard ss_tag_frequency content

extensions-builtin/Lora/ui_edit_user_metadata.py

@@ -21,7 +21,9 @@ re_comma = re.compile(r" *, *")
 def build_tags(metadata):
     tags = {}
 
-    for _, tags_dict in metadata.get("ss_tag_frequency", {}).items():
+    ss_tag_frequency = metadata.get("ss_tag_frequency", {})
+    if ss_tag_frequency is not None and hasattr(ss_tag_frequency, 'items'):
+        for _, tags_dict in ss_tag_frequency.items():
             for tag, tag_count in tags_dict.items():
                 tag = tag.strip()
                 tags[tag] = tags.get(tag, 0) + int(tag_count)