fix: if emoji is not set set random emoji

frontend/src/components/IconPicker.vue

@@ -66,7 +66,7 @@
 <script setup>
 import { gemoji } from 'gemoji'
 import { Popover } from 'frappe-ui'
-import { ref, computed } from 'vue'
+import { ref, computed, onMounted } from 'vue'
 
 const search = ref('')
 const emoji = defineModel()
@@ -109,5 +109,9 @@ function randomInt(min, max) {
   return Math.floor(Math.random() * (max - min + 1) + min)
 }
 
+onMounted(() => {
+  if (!emoji.value) setRandom()
+})
+
 defineExpose({ setRandom })
 </script>