chore: Display warning when logout without backup

assets/l10n/intl_en.arb

@@ -2516,5 +2516,6 @@
     "deviceKeys": "Device keys:",
     "letsStart": "Let's start",
     "enterInviteLinkOrMatrixId": "Enter invite link or Matrix ID...",
-    "reopenChat": "Reopen chat"
+    "reopenChat": "Reopen chat",
+    "noBackupWarning": "Warning! Without enabling chat backup, you will lose access to your encrypted messages. It is highly recommended to enable the chat backup first before logging out."
 }

lib/config/themes.dart

@@ -94,6 +94,11 @@ abstract class FluffyThemes {
             ),
           ),
         ),
+        dialogTheme: DialogTheme(
+          shape: RoundedRectangleBorder(
+            borderRadius: BorderRadius.circular(AppConfig.borderRadius),
+          ),
+        ),
         elevatedButtonTheme: ElevatedButtonThemeData(
           style: ElevatedButton.styleFrom(
             padding: const EdgeInsets.all(16),

lib/pages/settings/settings.dart

@@ -58,11 +58,14 @@ class SettingsController extends State<Settings> {
   }
 
   void logoutAction() async {
+    final noBackup = showChatBackupBanner == true;
     if (await showOkCancelAlertDialog(
           useRootNavigator: false,
           context: context,
           title: L10n.of(context)!.areYouSureYouWantToLogout,
-          okLabel: L10n.of(context)!.yes,
+          message: L10n.of(context)!.noBackupWarning,
+          isDestructiveAction: noBackup,
+          okLabel: L10n.of(context)!.logout,
           cancelLabel: L10n.of(context)!.cancel,
         ) ==
         OkCancelResult.cancel) {

lib/pages/settings_chat/settings_chat_view.dart

@@ -31,12 +31,9 @@ class SettingsChatView extends StatelessWidget {
                 title: Text(L10n.of(context)!.emoteSettings),
                 onTap: () => VRouter.of(context).to('emotes'),
                 trailing: const Icon(Icons.chevron_right_outlined),
-                leading: const Padding(
-                  padding: EdgeInsets.all(16.0),
-                  child: Icon(Icons.insert_emoticon_outlined),
-                ),
+                leading: const Icon(Icons.emoji_emotions_outlined),
               ),
-              const Divider(height: 1),
+              const Divider(),
               SettingsSwitchListTile.adaptive(
                 title: L10n.of(context)!.renderRichContent,
                 onChanged: (b) => AppConfig.renderHtml = b,
@@ -68,7 +65,7 @@ class SettingsChatView extends StatelessWidget {
                   storeKey: SettingKeys.autoplayImages,
                   defaultValue: AppConfig.autoplayImages,
                 ),
-              const Divider(height: 1),
+              const Divider(),
               SettingsSwitchListTile.adaptive(
                 title: L10n.of(context)!.sendOnEnter,
                 onChanged: (b) => AppConfig.sendOnEnter = b,