feat: accept recent_chunks in error telemetry schema (#9662)

* feat: accept recent_chunks in error telemetry schema

Add recent_chunks field to ErrorDataSchema (Zod) and
LettaCodeErrorProperty (analytics type) so the server can receive
and forward chunk diagnostics attached to error telemetry events.

* chore: regenerate openapi with recent_chunks field

fern/openapi.json

@@ -21968,6 +21968,13 @@
                                 },
                                 "model_id": {
                                   "type": "string"
+                                },
+                                "recent_chunks": {
+                                  "type": "array",
+                                  "items": {
+                                    "type": "object",
+                                    "additionalProperties": {}
+                                  }
                                 }
                               },
                               "required": [