fix: LEXAI-21 popup message type mismatch - use ANALYZE_TEXT to match background handler

entrypoints/popup/Popup.tsx

@@ -238,7 +238,7 @@ function Popup() {
     setError('');
 
     const response = await safeSendMessage({
-      type: 'lexai-action',
+      type: 'ANALYZE_TEXT',
       action,
       text,
     });