Integration: one Em Box Top and Em Box Bottom row in the shared and Japanese tables

feat/cjk-typography-ui (grid reference choices) and feat/paragraph-settings-full (border
and shading offsets) both add these keys; the tables hold each key once. The paragraph
settings rows stay.

crates/ui-egui/src/i18n.rs

@@ -231,8 +231,6 @@ const TABLE: &[(&str, [&str; 5])] = &[
         "Roman Word Break",
         ["Lateinische Wörter beliebig trennen", "Coupure libre des mots latins", "Corte libre de palabras latinas", "欧文泣き別れ", "西文单词断开"],
     ),
-    ("Em Box Top", ["Geviert oben", "Haut du cadratin", "Parte superior del cuadratín", "仮想ボディの上", "全角字框上"]),
-    ("Em Box Bottom", ["Geviert unten", "Bas du cadratin", "Parte inferior del cuadratín", "仮想ボディの下", "全角字框下"]),
     ("ICF Top", ["ICF oben", "Haut ICF", "Parte superior ICF", "平均字面の上", "平均字面上"]),
     ("ICF Bottom", ["ICF unten", "Bas ICF", "Parte inferior ICF", "平均字面の下", "平均字面下"]),
     ("Gyoudori:", ["Gyoudori:", "Gyoudori:", "Gyoudori:", "行取り:", "行取："]),

crates/ui-egui/src/i18n/ja.rs

@@ -102,8 +102,6 @@ pub(super) const TABLE: &[(&str, &str)] = &[
     ("Adjust Tsume", "ツメの調整"),
     ("Rotate Roman Characters in Vertical Text", "縦組み中の欧文回転"),
     ("Roman Word Break", "欧文泣き別れ"),
-    ("Em Box Top", "仮想ボディの上"),
-    ("Em Box Bottom", "仮想ボディの下"),
     ("ICF Top", "平均字面の上"),
     ("ICF Bottom", "平均字面の下"),
     ("Gyoudori:", "行取り:"),