feat(champ): use new data-turbo-focus-group to manage focus on multiple drop down

app/components/editable_champ/multiple_drop_down_list_component/multiple_drop_down_list_component.html.haml

@@ -5,6 +5,7 @@
         - b.label(for: @champ.checkbox_id(b.value)) do
           - b.check_box({ multiple: true, checked: @champ.selected_options.include?(b.value), aria: { describedby: @champ.describedby_id }, id: @champ.checkbox_id(b.value) }) + b.text
   - else
+    %div{ 'data-turbo-focus-group': true }
       - if @champ.selected_options.present?
         .fr-mb-2w{ "data-turbo": "true" }
           - @champ.selected_options.each do |option|

app/controllers/champs/options_controller.rb

@@ -3,7 +3,6 @@ class Champs::OptionsController < ApplicationController
 
   def remove
     @champ = policy_scope(Champ).includes(:champs).find(params[:champ_id])
-    @next_checkbox_id = @champ.next_checkbox_id(params[:option])
     @champ.remove_option([params[:option]].compact)
   end
 end

app/views/champs/options/remove.turbo_stream.haml

@@ -1,8 +1,3 @@
 = fields_for @champ.input_name, @champ do |form|
   = turbo_stream.replace @champ.input_group_id do
     = render EditableChamp::EditableChampComponent.new champ: @champ, form:
-
-- if @next_checkbox_id.present?
-  = turbo_stream.focus @next_checkbox_id
-- else
-  = turbo_stream.focus @champ.input_id