Icon rendering issue in WSL / Chromebook Linux

[chriso]

The unicode tick icon we're using (U+2714) is converted to a heavy check mark emoji (✔️ aka. :heavy_check_mark:) in some terminals. It does not appear to be an issue with the other icons we're using.

Is there another tick we can use that isn't converted to an emoji?

Here's an example on Windows (WSL):