No formatting after toggling multiline prop

[tomekzaw]

Reproducible on 7b19778 + iOS + Paper

[cpetzel]

I am also hitting this issue on version 0.1.62

[tomekzaw]

@cpetzel A quick workaround here might be to add key={shouldBeMultiline} to force re-mount of the native component when multiline changes (but note that it may also affect the internal state like cursor or selection).