Add hash to registeredComponents

Author: Dominus Vilicus

src/compiler/compile/render_ssr/index.ts

@@ -162,6 +162,7 @@ export default function ssr(
 		${component.fully_hoisted}
 
 		const ${name} = @create_ssr_component(($$result, $$props, $$bindings, $$slots) => {
+			${options.hash ? `$$result.registeredComponents.add('${options.hash}');` : ''}
 			${blocks}
 		});
 	`;