Native emoji version detection doesn't work properly

[mbasaglia]

I noticed the colorful squares from Emoji 12 don't show up in the picker:

despite being listed in the data files as large_purple_square and similar.

After a bit of debugging it seems the code that detects the emoji version supported (https://github.com/missive/emoji-mart/blob/main/packages/emoji-mart/src/helpers/native-support.ts#L17) thinks the browser only supports up to version 11 (while it actually supports up to version 15.1)

[mbasaglia]

Specifically it's this check that fails: https://github.com/missive/emoji-mart/blob/main/packages/emoji-mart/src/helpers/native-support.ts#L99

which compares the first non-zero pixel to the equivalent pixel in the repeated image. Perhaps that check is not stable due to antialiasing?