Bug fix for work_item_assignees_with_edit

What does this MR do and why?

Bug fix for work_item_assignees when the user cannot invite members. It also solves another bug where the assignees are wrongly updated when click outside

:Behind work_items_mvc_2

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

Before	After
Screen_Recording_2024-01-23_at_1.49.18_PM	Screen_Recording_2024-01-23_at_1.48.40_PM

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

1. In rails console enable FF

   Feature.enable(:work_items_mvc_2)

2. Apply the below patch

diff --git a/app/assets/javascripts/work_items/components/work_item_attributes_wrapper.vue b/app/assets/javascripts/work_items/components/work_item_attributes_wrapper.vue
index 76f1938c3ed8..6185c2fdded5 100644
--- a/app/assets/javascripts/work_items/components/work_item_attributes_wrapper.vue
+++ b/app/assets/javascripts/work_items/components/work_item_attributes_wrapper.vue
@@ -126,7 +126,7 @@ export default {
         :assignees="workItemAssignees.assignees.nodes"
         :allows-multiple-assignees="workItemAssignees.allowsMultipleAssignees"
         :work-item-type="workItemType"
-        :can-invite-members="workItemAssignees.canInviteMembers"
+        :can-invite-members="false"
         @error="$emit('error', $event)"
       />
       <work-item-assignees-inline

1. Visit any work item with assignees
2. Click on edit button , see that you are not able to see an extra border when not having the ability to invite members

For the 2nd point

1. Add multiple assignees for example 8
2. Click on edit and open the dropdown
3. Click on apply , see that the number of assignees should be same