Fix casting zoom level from string to floatInt

Changed the type of the zoomLevel parameter from number to string and updated the assignment to parse the zoomLevel as a float. This ensures that the zoom functionality properly handles string inputs by converting them to numerical values.

src/Bundle/ChillDocStoreBundle/Resources/public/vuejs/DocumentSignature/App.vue

@@ -331,8 +331,8 @@ const $toast = useToast();
 
 const signature = window.signature;
 
-const setZoomLevel = (zoomLevel: number) => {
-  zoom.value = zoomLevel;
+const setZoomLevel = (zoomLevel: string) => {
+  zoom.value = Number.parseFloat(zoomLevel);
   setPage(page.value);
   setTimeout(() => drawAllZones(page.value), 200);
 };