Pass char/user names for Claude example messages converter

public/scripts/openai.js

@@ -1603,6 +1603,8 @@ async function sendOpenAIRequest(type, messages, signal) {
         'stop': getCustomStoppingStrings(openai_max_stop_strings),
         'chat_completion_source': oai_settings.chat_completion_source,
         'n': canMultiSwipe ? oai_settings.n : undefined,
+        'user_name': name1,
+        'char_name': name2,
     };
 
     // Empty array will produce a validation error