feat: update colors for v4 (#10660)

Porting changes from https://github.com/chatwoot/chatwoot/pull/10552

---------

Co-authored-by: Pranav <pranav@chatwoot.com>
Co-authored-by: Sivin Varghese <64252451+iamsivin@users.noreply.github.com>
Co-authored-by: Vishnu Narayanan <vishnu@chatwoot.com>
Co-authored-by: Sojan <sojan@pepalo.com>
Co-authored-by: iamsivin <iamsivin@gmail.com>
Co-authored-by: Pranav <pranavrajs@gmail.com>

app/javascript/dashboard/components/widgets/WootWriter/ReplyBottomPanel.vue

@@ -328,7 +328,7 @@ export default {
       <NextButton
         v-if="hasWhatsappTemplates"
         v-tooltip.top-end="$t('CONVERSATION.FOOTER.WHATSAPP_TEMPLATES')"
-        icon="i-ph-whatsapp"
+        icon="i-ph-whatsapp-logo"
         slate
         faded
         sm