docs(tabs): update examples

docs/app/components/content/examples/tabs/TabsSelectedExample.vue

@@ -9,6 +9,13 @@ const items = [
 ]
 
 const selected = ref('1')
+
+// Note: This is for demonstration purposes only.
+onMounted(() => {
+  setInterval(() => {
+    selected.value = selected.value === '0' ? '1' : '0'
+  }, 1000)
+})
 </script>
 
 <template>

docs/app/components/content/examples/tooltip/TooltipOpenExample.vue

@@ -0,0 +1,16 @@
+<script setup lang="ts">
+const open = ref(true)
+
+// Note: This is for demonstration purposes only.
+onMounted(() => {
+  setInterval(() => {
+    open.value = !open.value
+  }, 1000)
+})
+</script>
+
+<template>
+  <UTooltip v-model:open="open" text="Open on GitHub">
+    <UButton icon="i-simple-icons-github" />
+  </UTooltip>
+</template>