i18n: Spanish for the new labels

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

crates/ui-egui/src/i18n.rs

@@ -89,8 +89,8 @@ const TABLE: &[(&str, [&str; 5])] = &[
     ("Cut", ["Ausschneiden", "Couper", "Cortar", "カット", "剪切"]),
     ("Copy", ["Kopieren", "Copier", "Copiar", "コピー", "复制"]),
     ("Paste", ["Einfügen", "Coller", "Pegar", "ペースト", "粘贴"]),
-    ("Join", ["Join", "Joindre", "Join", "Join", "连接"]),
-    ("Convert Point", ["Convert Point", "Convertir le point", "Convert Point", "Convert Point", "转换点"]),
+    ("Join", ["Join", "Joindre", "Unir", "Join", "连接"]),
+    ("Convert Point", ["Convert Point", "Convertir le point", "Convertir punto", "Convert Point", "转换点"]),
     ("Hide Rulers", ["Lineale ausblenden", "Masquer les règles", "Ocultar reglas", "定規を隠す", "隐藏标尺"]),
     ("Inches Decimal", ["Zoll dezimal", "Pouces décimaux", "Pulgadas decimales", "インチ（10 進）", "十进制英寸"]),
     (