iOS: Non-emoji text wrongly being rendered with "Noto Color Emoji" font

[chrisbobbe]

Details: https://chat.zulip.org/#narrow/stream/243-mobile-team/topic/flutter.3A.20text.20all.20weird/near/1633622

[chrisbobbe]

As mentioned there, the culprit was 593d88a / #245.

[chrisbobbe]

Will send a PR shortly.