chore: resolve n/no-unsupported-features lint error in symbol/async-iterator

PR-URL: #11927
Reviewed-by: Athan Reines <kgryte@gmail.com>

Author: Planeshifter

lib/node_modules/@stdlib/symbol/async-iterator/lib/main.js

@@ -21,6 +21,7 @@
 // MODULES //
 
 var hasAsyncIteratorSymbolSupport = require( '@stdlib/assert/has-async-iterator-symbol-support' ); // eslint-disable-line id-length
+var Symbol = require( '@stdlib/symbol/ctor' );
 
 
 // MAIN //