fix (ai/core): report streamText error on controller (#2242)

Author: lgrammel

.changeset/loud-news-sit.md

@@ -0,0 +1,5 @@
+---
+'ai': patch
+---
+
+fix (ai/core): report error on controller

packages/core/core/generate-text/stream-text.ts

@@ -505,7 +505,7 @@ stream will throw the error.
             controller.enqueue(chunk.textDelta);
           }
         } else if (chunk.type === 'error') {
-          throw chunk.error;
+          controller.error(chunk.error);
         }
       },
     });