Merge pull request #11054 from tchak/fix-drop-down-other

fix(champ): no crash when drop_down_list with other champ value_json is nil

app/models/types_de_champ/drop_down_list_type_de_champ.rb

@@ -12,6 +12,6 @@ class TypesDeChamp::DropDownListTypeDeChamp < TypesDeChamp::TypeDeChampBase
   end
 
   def champ_with_other_value?(champ)
-    drop_down_other? && champ.value_json['other']
+    drop_down_other? && champ.value_json&.fetch('other', false)
   end
 end