Merge branch 'fix-emoji-smiley-autocomplete' into 'master'

Improve emoji autocomplete when typing :) or :(

See merge request gitlab-org/gitlab!74204

fixtures/emojis/aliases.json

 {
+   ":) ":"smile",
+   ":( ":"disappointed",
    "small_airplane":"airplane_small",
    "right_anger_bubble":"anger_right",
    "keycap_asterisk":"asterisk",