feat: Fix issue with QStringControlRenderer setup function

The setup function in the QStringControlRenderer component was not handling the value correctly when it was an object. This commit fixes the issue by checking if the value is an object and returning its value property, or returning the value itself if it's not an object.

Author: tacxou

src/components/quasar-jsonform/controls/QStringControlRenderer.vue

@@ -66,7 +66,7 @@ const QStringControlRenderer = defineComponent({
   setup(props: RendererProps<ControlElement>) {
     return useQuasarControl(
       useJsonFormsControl(props),
-      (value) => isObject(value) ? value.value : value || undefined
+      (value) => isObject(value) ? value.value : value || undefined,
     )
   },
   methods: {

src/components/quasar-jsonform/util/composition.ts

@@ -113,6 +113,13 @@ export const useQuasarControl = <
     return props && isPlainObject(props) ? props : {};
   };
 
+  console.log('input', input.control.value.path, input.control.value.data)
+  if (typeof input.control.value.data === 'undefined' || input.control.value.data === null && input.control.value.errors) {
+    console.log('input.data', input.control.value.data)
+    input.handleChange(input.control.value.path, '')
+  }
+  console.log('input.data', input.control.value)
+
   return {
     ...input,
     styles,