ページネーション先頭の矢印(<<)表示を非リンク化で統一する

企業個別ユーザーページだけ特別扱いせず、大元のkaminariのページネーションを変更した
- #7956 (comment)
- https://github.com/fjordllc/bootcamp/pull/7956/files#r1757220135

app/views/companies/users/_user_list.html.slim

@@ -1,8 +1,8 @@
 - if users.present?
   .user-list
-    = paginate users, theme: 'company_user', params: { controller: 'companies/users', action: 'index' }
+    = paginate users, params: { controller: 'companies/users', action: 'index' }
     .row
       = render partial: 'users/user', collection: users
-    = paginate users, theme: 'company_user', params: { controller: 'companies/users', action: 'index' }
+    = paginate users, params: { controller: 'companies/users', action: 'index' }
 - else
   = render 'users/no_match_user'

app/views/kaminari/_first_page.html.slim

@@ -1,4 +1,8 @@
 - # rubocop:disable Rails/OutputSafety
 li.pagination__item.is-first
-  = link_to_unless current_page.first?, raw('<i class="fas fa-angle-double-left"></i>'), url, remote:, class: 'pagination__item-link is-first'
+  - if current_page.first?
+    span.pagination__item-link.is-first.is-disabled
+      i.fas.fa-angle-double-left
+  - else
+    = link_to raw('<i class="fas fa-angle-double-left"></i>'), url, remote:, class: 'pagination__item-link is-first'
 - # rubocop:enable Rails/OutputSafety

app/views/kaminari/_paginator.html.slim

@@ -2,7 +2,7 @@
   nav.pagination
     .container
       ul.pagination__items
-        == first_page_tag unless current_page.first?
+        == first_page_tag
         == prev_page_tag unless current_page.first?
         - each_page do |page|
           - if page.left_outer? || page.right_outer? || page.inside_window?