fix(ALConfigWidget): prevent config load from overriding unsaved UI changes

The previous implementation directly replaced the current
in-memory state of system and user configurations during
file loading. This behavior did not align with user
expectations, as it could discard unsaved changes made in the UI.

The fix ensures that loading a configuration file only
updates the internal in-memory state of system and user
configurations, preserving any unsaved UI modifications.

gui/ALConfigWidget.py

@@ -489,16 +489,12 @@ class ALConfigWidget(QWidget, Ui_ALConfigWidget):
             system_config = self.loadSystemConfig(config_path)
             users_config = self.loadUsersConfig(config_path)
             if system_config is not None:
-                self.__config_paths["system"] = config_path
                 self.__system_config_data.update(system_config)
                 self.setSystemConfigToWidget(self.__system_config_data)
-                self.CurrentSystemConfigEdit.setText(config_path)
                 return True
             if users_config is not None:
-                self.__config_paths["users"] = config_path
                 self.__users_config_data.update(users_config)
                 self.fillUsersList(self.__users_config_data)
-                self.CurrentUserConfigEdit.setText(config_path)
                 return True
         except:
             return False
@@ -644,7 +640,9 @@ class ALConfigWidget(QWidget, Ui_ALConfigWidget):
         )[0]
         if system_config_path:
             system_config_path = QDir.toNativeSeparators(system_config_path)
-            self.loadConfig(system_config_path)
+            if self.loadConfig(system_config_path):
+                self.__config_paths["system"] = system_config_path
+                self.CurrentSystemConfigEdit.setText(system_config_path)
 
     @Slot()
     def onBrowseCurrentUserConfigButtonClicked(
@@ -659,7 +657,9 @@ class ALConfigWidget(QWidget, Ui_ALConfigWidget):
         )[0]
         if users_config_path:
             users_config_path = QDir.toNativeSeparators(users_config_path)
-            self.loadConfig(users_config_path)
+            if self.loadConfig(users_config_path):
+                self.__config_paths["users"] = users_config_path
+                self.CurrentUserConfigEdit.setText(users_config_path)
 
     @Slot()
     def onBrowseExportSystemConfigButtonClicked(