fix(settings): dont rely on Qt.btoa to generate default settings dump.

Assets/settings-default.json

@@ -560,4 +560,4 @@
     "gridSnapScale": false,
     "monitorWidgets": []
   }
-}
+}

Assets/settings-widgets-default.json

@@ -292,4 +292,4 @@
       "colorName": "primary"
     }
   }
-}
+}