Add backward compatibility support for lightBlockWrapper in getSaveEl…

…ement (#27189)

packages/blocks/src/api/serializer.js

@@ -17,6 +17,7 @@ import {
 	getBlockType,
 	getFreeformContentHandlerName,
 	getUnregisteredTypeHandlerName,
+	hasBlockSupport,
 } from './registration';
 import { normalizeBlockType } from './utils';
 import BlockContentProvider from '../block-content-provider';
@@ -116,10 +117,14 @@ export function getSaveElement(
 
 	let element = save( { attributes, innerBlocks } );
 
+	const hasLightBlockWrapper =
+		blockType.apiVersion > 1 ||
+		hasBlockSupport( blockType, 'lightBlockWrapper', false );
+
 	if (
 		isObject( element ) &&
 		hasFilter( 'blocks.getSaveContent.extraProps' ) &&
-		! blockType.apiVersion
+		! hasLightBlockWrapper
 	) {
 		/**
 		 * Filters the props applied to the block save result element.