feat: ignore new TypeScript global leak

Ref: https://github.com/search?q=repo%3Amicrosoft%2Ftslib%20__rewriteRelativeImportExtension&type=code

Author: dominykas

lib/modules/leaks.js

@@ -71,7 +71,8 @@ const internals = {
         '__propKey',
         '__setFunctionName',
         '__addDisposableResource',
-        '__disposeResources'
+        '__disposeResources',
+        '__rewriteRelativeImportExtension'
     ]
 };