fix(QCarousel/QStepper/QTabPanels): JSON > model-value should be "req…

…uired"

ui/src/composables/private.use-panel/use-panel.json

@@ -4,6 +4,7 @@
       "type": "Any",
       "desc": "Model of the component defining the current panel's name; If a Number is used, it does not define the panel's index, but rather the panel's name which can also be an Integer; Either use this property (along with a listener for 'update:model-value' event) OR use the v-model directive.",
       "examples": [ "# v-model=\"panelName\"" ],
+      "required": true,
       "category": "model"
     },