This library does not seem to support IE9.

[wwstory]

Describe the bug
However, for the official nodejs language version of socketio (server side, latest version: 4.7), it can be used normally on IE9 (socketio version 3.0.5, for client, the latest version doesn't seem to work).

To Reproduce
Steps to reproduce the behavior:

1. rust for server
2. js for client (IE9, use socketio version 3.0.5 ~ 4.7.5)
3. for echo example, unable to successfully send or receive messages.

Expected behavior
hope to support IE9.

Versions (please complete the following information):

• Socketioxide version: 0.14.0
• axum version: 0.7.5
• Socket.io client version: IE9 browser

Additional context
on IE9 browser (not support websocket)