fix: Fix issue with profile picture not updating (#10532)

This PR resolves the issue with updating the profile picture in the profile settings.

**Cause of issue**
The issue can be reproduced with the old `ProfileAvatar.vue` component.
While the exact reason is unclear, it seems related to cases where the
file might be `null`.

**Solution**
Replaced the old `ProfileAvatar.vue` with `Avatar.vue` and tested it. It
works fine. I’ve attached a loom video below.

Fixes https://linear.app/chatwoot/issue/CW-3768/profile-picture-bug

Co-authored-by: Pranav <pranav@chatwoot.com>
Co-authored-by: Pranav <pranavrajs@gmail.com>

app/controllers/api/v1/profiles_controller.rb

@@ -17,7 +17,7 @@ class Api::V1::ProfilesController < Api::BaseController
 
   def avatar
     @user.avatar.attachment.destroy! if @user.avatar.attached?
-    head :ok
+    @user.reload
   end
 
   def auto_offline