feat: Allow users to mark a conversation as unread (#5924)

Allow users to mark conversations as unread.
Loom video: https://www.loom.com/share/ab70552d3c9c48b685da7dfa64be8bb3

fixes: #5552

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

app/javascript/dashboard/helper/URLHelper.js

@@ -66,6 +66,7 @@ export const conversationListPageURL = ({
   inboxId,
   label,
   teamId,
+  customViewId,
 }) => {
   let url = `accounts/${accountId}/dashboard`;
   if (label) {
@@ -76,6 +77,8 @@ export const conversationListPageURL = ({
     url = `accounts/${accountId}/mentions/conversations`;
   } else if (inboxId) {
     url = `accounts/${accountId}/inbox/${inboxId}`;
+  } else if (customViewId) {
+    url = `accounts/${accountId}/custom_view/${customViewId}`;
   }
   return frontendURL(url);
 };