TF-2241 Update text for en, fr, vi follow new language subtitle

(cherry picked from commit 56fa26b20b391a0cc2bd5ec1086cf5451b80e84a)

lib/l10n/intl_en.arb

@@ -1529,8 +1529,8 @@
     "placeholders_order": [],
     "placeholders": {}
   },
-  "languageAndRegionSubtitle": "Set the language, time zone, time format you use on Twake Mail.",
-  "@languageAndRegionSubtitle": {
+  "languageSubtitle": "Set the language you use on Twake Mail.",
+  "@languageSubtitle": {
     "type": "text",
     "placeholders_order": [],
     "placeholders": {}

lib/l10n/intl_fr.arb

@@ -1246,8 +1246,8 @@
     "placeholders_order": [],
     "placeholders": {}
   },
-  "languageAndRegionSubtitle": "Définissez la langue, le fuseau horaire et le format d'heure que vous utilisez sur Twake Mail.",
-  "@languageAndRegionSubtitle": {
+  "languageSubtitle": "Définissez la langue que vous utilisez sur Twake Mail.",
+  "@languageSubtitle": {
     "type": "text",
     "placeholders_order": [],
     "placeholders": {}

lib/l10n/intl_vi.arb

@@ -832,8 +832,8 @@
     "placeholders_order": [],
     "placeholders": {}
   },
-  "languageAndRegionSubtitle": "Thay đổi ngôn ngữ.",
-  "@languageAndRegionSubtitle": {
+  "languageSubtitle": "Thay đổi ngôn ngữ.",
+  "@languageSubtitle": {
     "type": "text",
     "placeholders_order": [],
     "placeholders": {}