invariant: non-Emoji characters should not have Extended_Pictographic

[markusicu]

Starting with Unicode 17, but also valid for older characters once UTC-182-A57 is done.

See L2/25-006 item 5.1 which includes:

An invariant test should be added that all assigned Extended_Pictographic characters are Emoji (more specifically, that \p{Extended_Pictographic}-\p{Cn}=\p{Emoji}-\p{Regional_Indicator}-\p{Emoji_Modifier}-\p{Block=Basic Latin}).

[markusicu]

Fixed by

• No ExtPict for old symbols #1019