feat: update email composer to handle trailing commas and improve recipient input handling

locales/de/common.json

@@ -298,9 +298,9 @@
     "saving": "Wird gespeichert...",
     "draft_saved": "Entwurf gespeichert",
     "save_failed": "Speichern fehlgeschlagen",
-    "to_placeholder": "E-Mail-Adressen der Empfänger (durch Komma getrennt)",
-    "cc_placeholder": "CC-Empfänger (durch Komma getrennt)",
-    "bcc_placeholder": "BCC-Empfänger (durch Komma getrennt)",
+    "to_placeholder": "E-Mail-Adressen der Empfänger",
+    "cc_placeholder": "CC-Empfänger",
+    "bcc_placeholder": "BCC-Empfänger",
     "subject_placeholder": "Betreff",
     "cc_label": "Cc:",
     "bcc_label": "Bcc:",

locales/en/common.json

@@ -299,9 +299,9 @@
     "saving": "Saving...",
     "draft_saved": "Draft saved",
     "save_failed": "Failed to save",
-    "to_placeholder": "Recipient email addresses (comma separated)",
-    "cc_placeholder": "Cc recipients (comma separated)",
-    "bcc_placeholder": "Bcc recipients (comma separated)",
+    "to_placeholder": "Recipient email addresses",
+    "cc_placeholder": "Cc recipients",
+    "bcc_placeholder": "Bcc recipients",
     "subject_placeholder": "Subject",
     "cc_label": "Cc:",
     "bcc_label": "Bcc:",

locales/es/common.json

@@ -298,9 +298,9 @@
     "saving": "Guardando...",
     "draft_saved": "Borrador guardado",
     "save_failed": "Error al guardar",
-    "to_placeholder": "Direcciones de correo de destinatarios (separadas por comas)",
-    "cc_placeholder": "Destinatarios CC (separados por comas)",
-    "bcc_placeholder": "Destinatarios CCO (separados por comas)",
+    "to_placeholder": "Direcciones de correo de destinatarios",
+    "cc_placeholder": "Destinatarios CC",
+    "bcc_placeholder": "Destinatarios CCO",
     "subject_placeholder": "Asunto",
     "cc_label": "CC:",
     "bcc_label": "CCO:",

locales/fr/common.json

@@ -298,9 +298,9 @@
     "saving": "Enregistrement...",
     "draft_saved": "Brouillon enregistré",
     "save_failed": "Échec de l'enregistrement",
-    "to_placeholder": "Adresses email des destinataires (séparées par des virgules)",
-    "cc_placeholder": "Destinataires en copie (séparés par des virgules)",
-    "bcc_placeholder": "Destinataires en copie cachée (séparés par des virgules)",
+    "to_placeholder": "Adresses email des destinataires",
+    "cc_placeholder": "Destinataires en copie",
+    "bcc_placeholder": "Destinataires en copie cachée",
     "subject_placeholder": "Objet",
     "cc_label": "Cc :",
     "bcc_label": "Cci :",

locales/it/common.json

@@ -298,9 +298,9 @@
     "saving": "Salvataggio...",
     "draft_saved": "Bozza salvata",
     "save_failed": "Salvataggio non riuscito",
-    "to_placeholder": "Indirizzi email dei destinatari (separati da virgola)",
-    "cc_placeholder": "Destinatari in copia (separati da virgola)",
-    "bcc_placeholder": "Destinatari in copia nascosta (separati da virgola)",
+    "to_placeholder": "Indirizzi email dei destinatari",
+    "cc_placeholder": "Destinatari in copia",
+    "bcc_placeholder": "Destinatari in copia nascosta",
     "subject_placeholder": "Oggetto",
     "cc_label": "Cc:",
     "bcc_label": "Ccn:",

locales/ja/common.json

@@ -298,9 +298,9 @@
     "saving": "保存中...",
     "draft_saved": "下書きを保存しました",
     "save_failed": "保存に失敗しました",
-    "to_placeholder": "受信者のメールアドレス（カンマ区切り）",
-    "cc_placeholder": "CC受信者（カンマ区切り）",
-    "bcc_placeholder": "BCC受信者（カンマ区切り）",
+    "to_placeholder": "受信者のメールアドレス",
+    "cc_placeholder": "CC受信者",
+    "bcc_placeholder": "BCC受信者",
     "subject_placeholder": "件名",
     "cc_label": "CC:",
     "bcc_label": "BCC:",

locales/nl/common.json

@@ -298,9 +298,9 @@
     "saving": "Opslaan...",
     "draft_saved": "Concept opgeslagen",
     "save_failed": "Opslaan mislukt",
-    "to_placeholder": "E-mailadressen van ontvangers (komma gescheiden)",
-    "cc_placeholder": "CC-ontvangers (komma gescheiden)",
-    "bcc_placeholder": "BCC-ontvangers (komma gescheiden)",
+    "to_placeholder": "E-mailadressen van ontvangers",
+    "cc_placeholder": "CC-ontvangers",
+    "bcc_placeholder": "BCC-ontvangers",
     "subject_placeholder": "Onderwerp",
     "cc_label": "CC:",
     "bcc_label": "BCC:",

locales/pt/common.json

@@ -298,9 +298,9 @@
     "saving": "Salvando...",
     "draft_saved": "Rascunho salvo",
     "save_failed": "Falha ao salvar",
-    "to_placeholder": "Endereços de e-mail dos destinatários (separados por vírgula)",
-    "cc_placeholder": "Destinatários CC (separados por vírgula)",
-    "bcc_placeholder": "Destinatários CCO (separados por vírgula)",
+    "to_placeholder": "Endereços de e-mail dos destinatários",
+    "cc_placeholder": "Destinatários CC",
+    "bcc_placeholder": "Destinatários CCO",
     "subject_placeholder": "Assunto",
     "cc_label": "CC:",
     "bcc_label": "CCO:",