GTK+ 3 and 4 disagreed on capitalisation and the translation of “Emoji”.
Use sentence case as elsewhere & the most common translation: emoticono.
#: gtk/gtkentry.c:8504
msgid "Insert _Emoji"
-msgstr "Inserir _Emoji"
+msgstr "Inserir _emoticono"
#: gtk/gtkentry.c:8677 gtk/gtktextview.c:9528
msgid "Select all"
#: gtk/gtkentry.c:9905
#| msgid "Insert _Emoji"
msgid "Insert Emoji"
-msgstr "Inserir emoticonos"
+msgstr "Inserir emoticono"
#: gtk/gtkfilechooserbutton.c:106
msgid "Select a File"