[Android][Disable work manager] Update some toast messages and banner to indicate when sending email failure, mail will be stored in Sending queue and can retry manually when connected

(cherry picked from commit 9a7555c114b1e7e375f41542a8b6c557a3091f82)

lib/l10n/intl_messages.arb

@@ -1,5 +1,5 @@
 {
-  "@@last_modified": "2024-01-07T14:01:28.226469",
+  "@@last_modified": "2024-01-11T00:19:44.628891",
   "initializing_data": "Initializing data...",
   "@initializing_data": {
     "type": "text",
@@ -2736,7 +2736,7 @@
     "placeholders_order": [],
     "placeholders": {}
   },
-  "messageHasBeenSavedToTheSendingQueue": "Message has been saved to the sending queue.",
+  "messageHasBeenSavedToTheSendingQueue": "Temporary network issue. Messages queued for retry when connected.",
   "@messageHasBeenSavedToTheSendingQueue": {
     "type": "text",
     "placeholders_order": [],
@@ -2836,6 +2836,12 @@
     "placeholders_order": [],
     "placeholders": {}
   },
+  "pending": "Pending",
+  "@pending": {
+    "type": "text",
+    "placeholders_order": [],
+    "placeholders": {}
+  },
   "error": "Error",
   "@error": {
     "type": "text",
@@ -3264,7 +3270,7 @@
     "placeholders_order": [],
     "placeholders": {}
   },
-  "bannerMessageSendingQueueViewOnIOS": "Messages in the Send Queue mailbox can be sent while online.",
+  "bannerMessageSendingQueueViewOnIOS": "Your messages were not sent due to network issues. They're safely stored. When you're back online, you can resend, edit, or delete them.",
   "@bannerMessageSendingQueueViewOnIOS": {
     "type": "text",
     "placeholders_order": [],

lib/main/localizations/app_localizations.dart

@@ -2817,7 +2817,7 @@ class AppLocalizations {
 
   String get messageHasBeenSavedToTheSendingQueue {
     return Intl.message(
-      'Message has been saved to the sending queue.',
+      'Temporary network issue. Messages queued for retry when connected.',
       name: 'messageHasBeenSavedToTheSendingQueue',
     );
   }
@@ -2927,6 +2927,13 @@ class AppLocalizations {
     );
   }
 
+  String get pending {
+    return Intl.message(
+      'Pending',
+      name: 'pending',
+    );
+  }
+
   String get error {
     return Intl.message(
       'Error',
@@ -3372,7 +3379,7 @@ class AppLocalizations {
 
   String get bannerMessageSendingQueueViewOnIOS {
     return Intl.message(
-      'Messages in the Send Queue mailbox can be sent while online.',
+      'Your messages were not sent due to network issues. They\'re safely stored. When you\'re back online, you can resend, edit, or delete them.',
       name: 'bannerMessageSendingQueueViewOnIOS'
     );
   }