Tiled gallery block: add wp-blob dependency (#11043)

Adds `@wordpress/blob` dependency for Tiled gallery since the block depends to it as of Automattic/wp-calypso#29559

## Testing

- Switch to `update/g7g-tg-consistent-layout` branch in Calypso
- Build blocks: `npm run sdk -- gutenberg ./client/gutenberg/extensions/presets/jetpack/ /PATH_TO_JETPACK/_inc/blocks/`
- Insert tiled gallery block
- **Upload** images to gallery. Blob URLs are URLs for images that are still uploading.
- The block can feel little broken due other issues but it shouldn't complain about missing dependency. ✨ (both editor and when publishing and looking at the page/post)

class.jetpack-gutenberg.php

@@ -471,6 +471,7 @@ public static function enqueue_block_editor_assets() {
 			array(
 				'lodash',
 				'wp-api-fetch',
+				'wp-blob',
 				'wp-blocks',
 				'wp-components',
 				'wp-compose',