Editing code blocks renders space/room invites

[SethFalco]

Steps to reproduce

1. Be in a chat room.
2. Send a message with a code block containing a space/room invite link.

Example:

Join my space:
https://matrix.to/#/#blue-panda-empyrean:matrix.org

Raw (don't copy-and-paste this, inserted nbsp characters for formatting):

`​`​`md
Join my space:
https://matrix.to/#/#blue-panda-empyrean:matrix.org
`​`​`

3. Edit the message, for example:

- Join my space:
+ Join my space!

What happened?

The invite gets rendered inside of the code block.

Before Edit:

After Edit:

What did you expect?

Code blocks should have text inside displayed literally. So, it should display the literal text without rendering the badge/image of the space/room.

Operating system

Ubuntu 20.04

Browser information

Firefox 91.0.1 (64-bit)

URL for webapp

develop.element.io

Have you submitted a rageshake?

No