feat: Move timeMixin to a helper (#9799)

# Pull Request Template

## Description

This PR will replace the usage of `timeMixin` with `timeHelper`

Fixes
https://linear.app/chatwoot/issue/CW-3451/move-time-mixin-to-a-helper

## Type of change

- [x] New feature (non-breaking change which adds functionality)

## How Has This Been Tested?

Please refer to this issue description.
https://linear.app/chatwoot/issue/CW-3451/move-time-mixin-to-a-helper

## Checklist:

- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [x] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules

---------

Co-authored-by: Sojan Jose <sojan@pepalo.com>

app/javascript/dashboard/modules/search/components/SearchResultConversationItem.vue

@@ -27,7 +27,7 @@
         </h5>
         <h5
           v-if="email"
-          class="text-sm email text-slate-700 dark:text-slate-200 overflow-hidden whitespace-nowrap text-ellipsis"
+          class="overflow-hidden text-sm email text-slate-700 dark:text-slate-200 whitespace-nowrap text-ellipsis"
         >
           <span class="pre-text">{{ $t('SEARCH.EMAIL') }}:</span>
           {{ email }}
@@ -40,14 +40,13 @@
 
 <script>
 import { frontendURL } from 'dashboard/helper/URLHelper.js';
-import timeMixin from 'dashboard/mixins/time';
+import { dynamicTime } from 'shared/helpers/timeHelper';
 import InboxName from 'dashboard/components/widgets/InboxName.vue';
 
 export default {
   components: {
     InboxName,
   },
-  mixins: [timeMixin],
   props: {
     id: {
       type: Number,
@@ -90,7 +89,7 @@ export default {
       );
     },
     createdAtTime() {
-      return this.dynamicTime(this.createdAt);
+      return dynamicTime(this.createdAt);
     },
   },
 };