Support expanding group if has access to subgroup

What does this MR do and why?

Related issue: #2000 (comment 2517516)

Dependent Upstream MR: Support Jihu override "group_item.vue"

Support expanding group if only has access to subgroup.

Screenshots or screen recordings

On the Groups list page, a user with only subgroup privileges but no rootgroup privileges will see:

Before	After

How to set up and validate locally

1. Enable feature flag group_folder_caret_optimization

   $ bin/rails console
   
   [1] pry(main)> Feature.enable(:group_folder_caret_optimization)

2. Register a new user (instead of using the root user as it has too high privileges)
3. Invite this new user into a subgroup
4. Login as this new user and visit the groups list page (http://127.0.0.1:3000/dashboard/groups)

MR acceptance checklist

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