Actually show help_text on init ChatFeed (#6506)

* Fix help text

* Revert and use self.objects instead

panel/chat/feed.py

@@ -217,7 +217,7 @@ def __init__(self, *objects, **params):
         )
         # we separate out chat log for the auto scroll feature
         self._chat_log = Feed(
-            *objects,
+            *self.objects,
             load_buffer=self.load_buffer,
             auto_scroll_limit=self.auto_scroll_limit,
             scroll_button_threshold=self.scroll_button_threshold,

panel/tests/ui/chat/test_chat_interface_ui.py

@@ -0,0 +1,18 @@
+import pytest
+
+pytest.importorskip("playwright")
+
+from panel.chat import ChatInterface
+from panel.tests.util import serve_component
+
+pytestmark = pytest.mark.ui
+
+
+def test_chat_interface_help(page):
+    chat_interface = ChatInterface(
+        help_text="This is a test help text"
+    )
+    serve_component(page, chat_interface)
+    message = page.locator("p")
+    message_text = message.inner_text()
+    assert message_text == "This is a test help text"