Extension point for Theme Builder template card header

Describe the Problem Description On multilingual sites, Theme Builder often contains multiple templates with similar names across languages (e.g. "Header", "Footer", "Single Post"). We need a supported way to show per-template metadata — such as a language flag — directly on the card, next to the title. What works today Elementor Pro exposes a server-side filter: apply_filters( 'elementor-pro/site-editor/data/template', $data ); This allows attaching extra per-template data (e.g. a flag URL). Other features already use this filter, which suggests the data layer is intended for extension. The gap In SiteTemplateHeader, the title is rendered as plain text: <Heading tag="h1" title={ title } variant="text-sm" className="eps-cardheadline">{ title }</Heading> Because React escapes title, there is no supported way to render extra UI from that filtered data. HTML in title is not a…