List the current user first in issuable dropdowns

app/views/shared/issuable/_filter.html.haml

@@ -60,7 +60,7 @@
       .issues_bulk_update.hide
         = form_tag bulk_update_namespace_project_issues_path(@project.namespace, @project), method: :post  do
           = select_tag('update[state_event]', options_for_select([['Open', 'reopen'], ['Closed', 'close']]), prompt: "Status", class: 'form-control')
-          = users_select_tag('update[assignee_id]', placeholder: 'Assignee', null_user: true, current_user: true)
+          = users_select_tag('update[assignee_id]', placeholder: 'Assignee', null_user: true, first_user: true, current_user: true)
           = select_tag('update[milestone_id]', bulk_update_milestone_options, prompt: "Milestone")
           = hidden_field_tag 'update[issues_ids]', []
           = hidden_field_tag :state_event, params[:state_event]

app/views/shared/issuable/_form.html.haml

@@ -48,7 +48,7 @@
         = users_select_tag("#{issuable.class.model_name.param_key}[assignee_id]",
             placeholder: 'Select a user', class: 'custom-form-control', null_user: true,
             selected: issuable.assignee_id, project: @target_project || @project,
-            current_user: true)
+            first_user: true, current_user: true)
          
         = link_to 'Assign to me', '#', class: 'btn assign-to-me-link'
   .form-group