fix: images did not get cleared after clicking stop

src/locales/en-US/playground.ts

@@ -152,5 +152,7 @@ export default {
     '1. After selection, no further masking can be drawn; therefore, you should draw the mask first and then check the option.\n 2. Once a mask image is uploaded, no further masks can be generated.',
   'playground.model.noavailable.tips2':
     'If the expected model isn’t showing up, make sure it’s running and correctly categorized. If the category is incorrect, you can manually adjust it in the model’s settings.',
-  'playground.rerank.query.validate': 'The query is required.'
+  'playground.rerank.query.validate': 'The query is required.',
+  'playground.image.generate.error':
+    'Something went wrong. The image could not be generated.'
 };