🐛 Fix: Message.__contains__() 未考虑 bool(MessageSegment) 存在 False 情况导致的异常结果 (#2572)

Co-authored-by: Ju4tCode <42488585+yanyongyu@users.noreply.github.com>

tests/test_adapters/test_message.py

@@ -192,6 +192,11 @@ def test_message_contains():
     assert message.has("foo") is False
     assert "foo" not in message
 
+    assert not bool(FakeMessageSegment.text(""))
+    msg_with_empty_seg = FakeMessage([FakeMessageSegment.text("")])
+    assert msg_with_empty_seg.has("text") is True
+    assert "text" in msg_with_empty_seg
+
 
 def test_message_only():
     message = FakeMessage(