feat(mobile): Removed stay logged in checkbox and made it enabled by default (#1550)

* removed stay logged in checkbox and made it enabled by default

* adds padding to login button

* removed all isSaveLogin

* fix: logout would re-login with previous credential upon app restart

---------

Co-authored-by: Alex <alex.tran1502@gmail.com>

mobile/lib/modules/login/models/hive_saved_login_info.model.dart

@@ -13,9 +13,6 @@ class HiveSavedLoginInfo {
   @HiveField(2)
   String serverUrl;
 
-  @HiveField(3, defaultValue: false)
-  bool isSaveLogin;
-
   @HiveField(4, defaultValue: "")
   String accessToken;
 
@@ -23,7 +20,6 @@ class HiveSavedLoginInfo {
     required this.email,
     required this.password,
     required this.serverUrl,
-    required this.isSaveLogin,
     required this.accessToken,
   });
 }