Fix possible prototype pollution

src/cdn/combineCKCdnBundlesPacks.ts

@@ -46,7 +46,8 @@ export const combineCKCdnBundlesPacks = <P extends CKCdnBundlesPacks>( packs: P
 
 		// Map all exports into one big object.
 		getExportedEntries: async () => {
-			const exportedGlobalVariables: Record<string, unknown> = {};
+			// Use Object.create() to create an object without a prototype to avoid prototype pollution.
+			const exportedGlobalVariables: Record<string, unknown> = Object.create( {} );
 
 			// It can be done sequentially because scripts *should* be loaded at this point and the whole execution should be quite fast.
 			for ( const [ name, pack ] of Object.entries( packs ) ) {