Bug with skin tone emojis when using `prevGraphemeClusterBreak` package

[steff456]

There's an issue with prevGraphemeClusterBreak package, if I compare the results with nextGraphemeClusterBreak for a single skin tone emoji it doesn't return the same values,

prevGraphemeClusterBreak( '👉🏿' ) // returns 1
nextGraphemeClusterBreak( '👉🏿' ) // returns -1

Originally posted by @steff456 in #1079 (comment)

[Shashankss1205]

Can you please assign this issue to me?

[kgryte]

Thank you for volunteering to work on this, @Shashankss1205. Please feel free to submit a PR addressing this bug.