[BUG] Replace text with media on send message will send duplicate messages

[jiz4oh]

Describe the bug

Send media twice after replace a text message with media

To Reproduce

1. send a message with a placeholder text e.g. Download failed
2. edit the message with edit=True,edit_media=True by a Media and no caption
3. telegram raise Message is not modified: specified new message content and reply markup are exactly the same as a current content and reply markup of the message here because the caption is None when edit media

Expected behavior

Only send image once

Screenshots

after edit message

Version information (please complete the following information):

• OS: linux
• Detailed Python, EFB and module versions: (you can obtain this by running ehforwarderbot --version)
  python: 3.11
  ehforwarderbot: 2.1.1

EH Forwarder Bot
Version: 2.1.1
Python version:
3.11

Master channel:
    efb-telegram-master: 2.3.0

Slave channel:
    efb-wechat-comwechat-slave

Additional context
Add any other context about the problem here.