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/v3/components/Form/Textarea.vue

@@ -46,7 +46,7 @@ export default {
       default: '',
     },
   },
-  emits: ['input'],
+  emits: ['input', 'blur'],
   methods: {
     onInput(e) {
       this.$emit('input', e.target.value);

app/javascript/v3/views/auth/signup/Index.vue

@@ -74,7 +74,7 @@ export default {
       <Testimonials
         v-if="isAChatwootInstance"
         class="flex-1"
-        @resizeContainers="resizeContainers"
+        @resize-containers="resizeContainers"
       />
     </div>
     <div

app/javascript/v3/views/auth/signup/components/Testimonials/Index.vue

@@ -3,6 +3,7 @@ import TestimonialCard from './TestimonialCard.vue';
 import { getTestimonialContent } from '../../../../../api/testimonials';
 export default {
   components: { TestimonialCard },
+  emits: ['resizeContainers'],
   data() {
     return { testimonials: [] };
   },