can't handle requests made by replying, in encrypted rooms

[kylrth]

In an encrypted room, the bot can edit just fine if asked to edit the message immediately preceding, but it cannot edit if the message is selected by replying:

It appears that self.client.get_event returns an EncryptedEvent, which the plugin can't handle:

Traceback (most recent call last):
  File "/usr/lib/python3.10/site-packages/mautrix/client/syncer.py", line 235, in _catch_errors
    await handler(data)
  File "/data/plugins/xyz.maubot.sed-v1.1.0.mbp/sed.py", line 192, in message_handler
    await self.command_handler(evt)
  File "/opt/maubot/maubot/handlers/command.py", line 490, in replacement
    await asyncio.gather(combine(self, evt), orig_replacement(self, evt))
  File "/opt/maubot/maubot/handlers/command.py", line 480, in replacement
    await func(self, evt, val)
  File "/data/plugins/xyz.maubot.sed-v1.1.0.mbp/sed.py", line 205, in command_handler
    await self._command_handler(evt, match)
  File "/data/plugins/xyz.maubot.sed-v1.1.0.mbp/sed.py", line 223, in _command_handler
    await self._try_replace_event(evt.event_id, stmt, reply_evt)
  File "/data/plugins/xyz.maubot.sed-v1.1.0.mbp/sed.py", line 166, in _try_replace_event
    replaced = self._exec(stmt, orig_evt.content.body)
AttributeError: 'EncryptedMegolmEventContent' object has no attribute 'body'