fix: vue 3 followup fixes (#10213)

Fixes: CW-3602,  CW-3606, CW-3605, CW-3601, CW-3603, CW-3600, CW-3598

-
[CW-3602](https://linear.app/chatwoot/issue/CW-3602/chat-list-infinite-loader-fetching-only-odd-numbered-pages)
Chat list pagination broken
-
[CW-3606](https://linear.app/chatwoot/issue/CW-3606/saving-greeting-message-is-not-working-in-inbox-settings)
Greetings message not getting saved
-
[CW-3605](https://linear.app/chatwoot/issue/CW-3605/copy-and-paste-image-attachment-not-working-in-widget)
Paste not working on widget
-
[CW-3601](https://linear.app/chatwoot/issue/CW-3601/edit-category-is-not-working-properly)
Edit category not updating
-
[CW-3603](https://linear.app/chatwoot/issue/CW-3603/delete-filter-is-not-working)
Delete filter modal not toggling
-
[CW-3600](https://linear.app/chatwoot/issue/CW-3600/portal-editor-is-not-working-properly)
Portal editor events were flaky
-
[CW-3598](https://linear.app/chatwoot/issue/CW-3598/rearrange-of-pre-chat-form-fields-throws-an-error)
Prechat form re-order bug

---------

Co-authored-by: Vishnu Narayanan <iamwishnu@gmail.com>

app/javascript/dashboard/components/ChatList.vue

@@ -537,12 +537,6 @@ function loadMoreConversations() {
     return;
   }
 
-  // Increment the current page
-  store.dispatch('conversationPage/setCurrentPage', {
-    filter: currentPageFilterKey.value,
-    page: currentFiltersPage.value + 1,
-  });
-
   if (!hasAppliedFiltersOrActiveFolders.value) {
     fetchConversations();
   } else if (hasActiveFolders.value) {