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/javascript/dashboard/store/modules/auth.js

@@ -133,9 +133,10 @@ export const actions = {
     }
   },
 
-  deleteAvatar: async () => {
+  deleteAvatar: async ({ commit }) => {
     try {
-      await authAPI.deleteAvatar();
+      const response = await authAPI.deleteAvatar();
+      commit(types.SET_CURRENT_USER, response.data);
     } catch (error) {
       // Ignore error
     }