Fix tag display in experiment table for viewer role [SCI-7696] (#4781)

app/assets/javascripts/experiments/table.js

@@ -632,6 +632,11 @@ ExperimnetTable.render.assigned = function(data) {
 
 ExperimnetTable.render.tags = function(data) {
   const value = parseInt(data.tags, 10) === 0 ? I18n.t('experiments.table.add_tag') : data.tags;
+
+  if (data.tags === 0 && !data.can_create) {
+    return `<span class="disabled">${I18n.t('experiments.table.not_set')}</span>`;
+  }
+
   return `<a href="${data.edit_url}"
              id="myModuleTags${data.my_module_id}"
              data-remote="true"

app/services/experiments/table_view_service.rb

@@ -161,6 +161,7 @@ module Experiments
       {
         my_module_id: my_module.id,
         tags: my_module.tags.length,
+        can_create: can_manage_my_module_tags?(@user, my_module),
         edit_url: my_module_tags_edit_path(my_module, format: :json)
       }
     end