Unicode emoji rendering in Twitter thumbnails

[chrzgame]

Pool_pm links in Twitter do not correctly render automatically generated thumbnails, when (onchain svg) thumbnails include unicode emojis. Specifically, some emojis are replaced by their corresponding Hex encoding.

[SmaugPool]

The issue is confirmed for example with https://pool.pm/asset1m34y7vhg0mjxtjfca9eadmmtu0t9txcfzyaa9e on Telegram:

[SmaugPool]

Emojis are now supported, but colors are not yet displayed correctly.

Example on Discord:

The issue comes from an underlying libsrvg library. The fix will be included once done in this library:
https://gitlab.gnome.org/GNOME/librsvg/-/issues/911