message: change page-renderer to use render strategy
diff: {{#each this.pageManager.schemaBlockGroups as |group|}}
  - <Registries::SchemaBlockGroupRenderer @schemaBlockGroup={{group}} @changeset={{this.pageManager.changeset}} />
  + <Registries::SchemaBlockGroupRenderer
  + @schemaBlockGroup={{group}}
  + @renderStrategy={{
  + component
  + 'registries/schema-block-renderer/editable/mapper'
  + changeset=this.pageManager.changeset
  + node=@node
  + }}
  + />
  {{/each}}
  \ No newline at end of file
  