TF-4029 Fix singular vs plural for attachments

lib/l10n/intl_en.arb

@@ -363,6 +363,18 @@
       "totalSize": {}
     }
   },
+  "singularAttachmentTitleHeader": "{count} Attachment ({totalSize})",
+  "@singularAttachmentTitleHeader": {
+    "type": "text",
+    "placeholders_order": [
+      "count",
+      "totalSize"
+    ],
+    "placeholders": {
+      "count": {},
+      "totalSize": {}
+    }
+  },
   "attach_file_prepare_text": "Preparing to attach file...",
   "@attach_file_prepare_text": {
     "type": "text",
@@ -787,6 +799,12 @@
     "placeholders_order": [],
     "placeholders": {}
   },
+  "attachment": "Attachment",
+  "@attachment": {
+    "type": "text",
+    "placeholders_order": [],
+    "placeholders": {}
+  },
   "showAll": "Show all",
   "@showAll": {
     "type": "text",

lib/l10n/intl_fr.arb

@@ -654,6 +654,12 @@
     "placeholders_order": [],
     "placeholders": {}
   },
+  "attachment": "Pièce jointe",
+  "@attachment": {
+    "type": "text",
+    "placeholders_order": [],
+    "placeholders": {}
+  },
   "show_all": "Tout afficher",
   "@show_all": {
     "type": "text",
@@ -2120,6 +2126,18 @@
       "totalSize": {}
     }
   },
+  "singularAttachmentTitleHeader": "{count} Pièce jointe ({totalSize})",
+  "@singularAttachmentTitleHeader": {
+    "type": "text",
+    "placeholders_order": [
+      "count",
+      "totalSize"
+    ],
+    "placeholders": {
+      "count": {},
+      "totalSize": {}
+    }
+  },
   "undo": "Annuler",
   "@undo": {
     "type": "text",

lib/l10n/intl_messages.arb

@@ -1,5 +1,5 @@
 {
-  "@@last_modified": "2025-09-11T12:24:54.969188",
+  "@@last_modified": "2025-09-19T09:56:48.738620",
   "initializing_data": "Initializing data...",
   "@initializing_data": {
     "type": "text",
@@ -390,6 +390,18 @@
       "totalSize": {}
     }
   },
+  "singularAttachmentTitleHeader": "{count} Attachment ({totalSize})",
+  "@singularAttachmentTitleHeader": {
+    "type": "text",
+    "placeholders_order": [
+      "count",
+      "totalSize"
+    ],
+    "placeholders": {
+      "count": {},
+      "totalSize": {}
+    }
+  },
   "attach_file_prepare_text": "Preparing to attach file...",
   "@attach_file_prepare_text": {
     "type": "text",
@@ -842,6 +854,12 @@
     "placeholders_order": [],
     "placeholders": {}
   },
+  "attachment": "Attachment",
+  "@attachment": {
+    "type": "text",
+    "placeholders_order": [],
+    "placeholders": {}
+  },
   "showAll": "Show all",
   "@showAll": {
     "type": "text",
@@ -4842,7 +4860,7 @@
     "placeholders_order": [],
     "placeholders": {}
   },
-  "attachmentReminderModalMessage": "You wrote {keyword} in your message but did not add any attachments. Do you still want to send ?",
+  "attachmentReminderModalMessage": "You wrote {keyword} in your message but did not add any attachments. Do you still want to send?",
   "@attachmentReminderModalMessage": {
     "type": "text",
     "placeholders_order": [