style: apply fixes for eslint issues [cw-3590] (#10210)

These fixes are all auto generated and can be merged directly

Fixes the following issues

1. Event used on components should be hypenated
2. Attribute orders in components
3. Use `unmounted` instead of `destroyed`
4. Add explicit `emits` declarations for components, autofixed [using
this
script](https://gist.github.com/scmmishra/6f549109b96400006bb69bbde392eddf)


We ignore the top level v-if for now, we will fix it later

app/javascript/dashboard/components/CustomBrandPolicyWrapper.vue

@@ -18,6 +18,7 @@ const shouldShowContent = computed(
 );
 </script>
 
+<!-- eslint-disable-next-line vue/no-root-v-if -->
 <template>
   <div v-if="shouldShowContent">
     <slot />