Build the recursion-cap sentinel element used when the renderer
encounters circular schema references. The label is interpolated via
h() + serialize so any HTML in meta.description (which is
schema-author content but can equally be sourced from user-supplied
JSON Schema input) is escaped — never interpolated into raw markup.
Build the recursion-cap sentinel element used when the renderer encounters circular schema references. The label is interpolated via
h()+serializeso any HTML inmeta.description(which is schema-author content but can equally be sourced from user-supplied JSON Schema input) is escaped — never interpolated into raw markup.