test(inference): align Anthropic retry fixture

Signed-off-by: Carlos Villela <cvillela@nvidia.com>

Author: cv

test/onboard-selection-anthropic-retry.test.ts

@@ -51,8 +51,17 @@ elif echo "$auth" | grep -q '${goodToken}' && echo "$url" | grep -q '/v1/message
     body='event: message_start
 data: {"type":"message_start","message":{"id":"msg_123"}}
 
+event: content_block_start
+data: {"type":"content_block_start","index":0,"content_block":{"type":"tool_use","id":"tool_123","name":"emit_ok","input":{}}}
+
 event: content_block_delta
-data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":"OK"}}
+data: {"type":"content_block_delta","index":0,"delta":{"type":"input_json_delta","partial_json":"{}"}}
+
+event: content_block_stop
+data: {"type":"content_block_stop","index":0}
+
+event: message_delta
+data: {"type":"message_delta","delta":{"stop_reason":"tool_use"}}
 
 event: message_stop
 data: {"type":"message_stop"}