call system status only when app is not hidden

components/SystemStats.vue

@@ -105,12 +105,14 @@ async function status() {
 async function systemStatus() {
     const channel = configStore.configGui[configStore.configID].id
 
+    if (!document?.hidden) {
         await $fetch<SystemStatistics>(`/api/system/${channel}`, {
             method: 'GET',
             headers: { ...contentType, ...authStore.authHeader },
         }).then((stat: SystemStatistics) => {
             sysStat.value = stat
         })
+    }
 }
 </script>
 <style>