Create shortlist of unicode emoji for bridge-moji feature
The new bridge cards that were designed for about:preferences#connection in #40782 (closed) initially included four randomly generated words to help differentiate one bridge from another. When reviewing this feature, the team pointed out that using an English-language dictionary would lead to poorer recognition by non-English speakers – and it was suggested to replace these with emojis instead (similar to how matrix.org handles key-comparisons, which is a nice analogue), which would have the added benefit of still being a11y friendly
This ticket is to review the full unicode list of emoji and provide a safe shortlist/subset to use when generating bridge-moji. For example, we should avoid emoji of a political nature (e.g. flags), those with negative connotations (e.g. weapons or alcohol), emoji that are hard to recognize/describe, or emojis that are too similar to differentiate at a glance (e.g. the many different kinds of smiley).