fix: update say_stream test assertions for slack_sdk v3.42.0

The SDK now includes icon_emoji, icon_url, and username in
ChatStream._stream_args. Update assertions to expect these keys.

Co-Authored-By: Claude <svc-devxp-claude@slack-corp.com>

Author: zimeg

tests/slack_bolt/context/test_say_stream.py

@@ -44,6 +44,9 @@ def test_default_params(self):
             "recipient_team_id": "T111",
             "recipient_user_id": "U111",
             "task_display_mode": None,
+            "icon_emoji": None,
+            "icon_url": None,
+            "username": None,
         }
 
     def test_parameter_overrides(self):
@@ -63,6 +66,9 @@ def test_parameter_overrides(self):
             "recipient_team_id": "T222",
             "recipient_user_id": "U222",
             "task_display_mode": None,
+            "icon_emoji": None,
+            "icon_url": None,
+            "username": None,
         }
 
     def test_buffer_size_overrides(self):
@@ -88,4 +94,7 @@ def test_buffer_size_overrides(self):
             "recipient_team_id": "T222",
             "recipient_user_id": "U222",
             "task_display_mode": None,
+            "icon_emoji": None,
+            "icon_url": None,
+            "username": None,
         }

tests/slack_bolt_async/context/test_async_say_stream.py

@@ -55,6 +55,9 @@ async def test_default_params(self):
             "recipient_team_id": "T111",
             "recipient_user_id": "U111",
             "task_display_mode": None,
+            "icon_emoji": None,
+            "icon_url": None,
+            "username": None,
         }
 
     @pytest.mark.asyncio
@@ -75,6 +78,9 @@ async def test_parameter_overrides(self):
             "recipient_team_id": "T222",
             "recipient_user_id": "U222",
             "task_display_mode": None,
+            "icon_emoji": None,
+            "icon_url": None,
+            "username": None,
         }
 
     @pytest.mark.asyncio
@@ -101,4 +107,7 @@ async def test_buffer_size_overrides(self):
             "recipient_team_id": "T222",
             "recipient_user_id": "U222",
             "task_display_mode": None,
+            "icon_emoji": None,
+            "icon_url": None,
+            "username": None,
         }