Render text templates (Scriban or Razor) in ABP. USE FOR: TemplateDefinitionProvider, TemplateDefinition + WithScribanEngine/WithRazorEngine, WithVirtualFilePath content, ITemplateRenderer.RenderAsync, per-culture localization, layouts, the Razor safety boundary. DO NOT USE FOR: sending the rendered body as email (send-emails); embedding .tpl files (manage-virtual-files); localization resources (localize-applications).