Activity Log: register wp-build polyfills so the admin bundle loads

projects/packages/activity-log/changelog/fix-activity-log-blank

@@ -0,0 +1,4 @@
+Significance: patch
+Type: fixed
+
+Register wp-build polyfills so the admin bundle loads on WordPress versions that don't provide the wp-theme script handle

projects/packages/activity-log/composer.json

@@ -10,7 +10,8 @@
 		"automattic/jetpack-autoloader": "@dev",
 		"automattic/jetpack-composer-plugin": "@dev",
 		"automattic/jetpack-connection": "@dev",
-		"automattic/jetpack-status": "@dev"
+		"automattic/jetpack-status": "@dev",
+		"automattic/jetpack-wp-build-polyfills": "@dev"
 	},
 	"require-dev": {
 		"automattic/jetpack-changelogger": "@dev",

projects/packages/activity-log/src/class-jetpack-activity-log.php

@@ -16,6 +16,7 @@
 use Automattic\Jetpack\Assets;
 use Automattic\Jetpack\Connection\Initial_State as Connection_Initial_State;
 use Automattic\Jetpack\Connection\Manager as Connection_Manager;
+use Automattic\Jetpack\WP_Build_Polyfills\WP_Build_Polyfills;
 use function add_action;
 use function add_filter;
 use function current_user_can;
@@ -146,6 +147,21 @@ public static function admin_init() {
 			}
 		}
 
+		// The admin bundle depends on `@wordpress/*` handles (e.g. `wp-theme`,
+		// pulled in via `@wordpress/ui`) that Core does not register on older
+		// WordPress versions. Without them, WP_Scripts silently drops the
+		// bundle and the page renders as an empty root node. Register the
+		// polyfills here so this only runs on the Activity Log screen — the
+		// register() call can force-replace Core handles, so it must stay
+		// page-scoped rather than firing on every admin request.
+		WP_Build_Polyfills::register(
+			'jetpack-activity-log',
+			array_merge(
+				WP_Build_Polyfills::SCRIPT_HANDLES,
+				WP_Build_Polyfills::MODULE_IDS
+			)
+		);
+
 		add_action( 'admin_enqueue_scripts', array( __CLASS__, 'enqueue_admin_scripts' ) );
 	}
 

projects/plugins/jetpack/changelog/fix-activity-log-blank

@@ -0,0 +1,5 @@
+Significance: patch
+Type: other
+Comment: Composer lock update
+
+