feat: update vue-letter and allow transform css (#10865)

Emails from iOS and MacOS clients can often come with size
transformation. This results in a broken layout when sanitizing with Vue
letter.

This PR updates the vue-letter to include the [recent changes made
there](https://github.com/mat-sz/vue-letter/pull/2). And adds the
`transform` and `transform-origin` properties to the allow list

Ref: https://www.caniemail.com/features/css-transform/

---------

Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

app/javascript/dashboard/components-next/message/bubbles/Email/Index.vue

@@ -1,6 +1,7 @@
 <script setup>
 import { computed, useTemplateRef, ref, onMounted } from 'vue';
 import { Letter } from 'vue-letter';
+import { allowedCssProperties } from 'lettersanitizer';
 
 import Icon from 'next/icon/Icon.vue';
 import { EmailQuoteExtractor } from './removeReply.js';
@@ -93,6 +94,11 @@ const hasQuotedMessage = computed(() => {
           <Letter
             v-if="showQuotedMessage"
             class-name="prose prose-bubble !max-w-none"
+            :allowed-css-properties="[
+              ...allowedCssProperties,
+              'transform',
+              'transform-origin',
+            ]"
             :html="fullHTML"
             :text="textToShow"
           />
@@ -100,6 +106,11 @@ const hasQuotedMessage = computed(() => {
             v-else
             class-name="prose prose-bubble !max-w-none"
             :html="unquotedHTML"
+            :allowed-css-properties="[
+              ...allowedCssProperties,
+              'transform',
+              'transform-origin',
+            ]"
             :text="textToShow"
           />
         </template>