stream: optimize internal pipe handling with optional chaining

Author: mertcanaltin

lib/internal/webstreams/readablestream.js

@@ -1374,8 +1374,8 @@ function readableStreamPipeTo(
   preventCancel,
   signal) {
 
-  const sourceStreamBase = source[kStreamBase];
-  const destStreamBase = dest[kStreamBase];
+  const sourceStreamBase = source?.[kStreamBase];
+  const destStreamBase = dest?.[kStreamBase];
 
   if (sourceStreamBase !== undefined &&
       destStreamBase !== undefined &&
@@ -1395,7 +1395,7 @@ function readableStreamPipeTo(
       };
       pipe.start();
     } catch (error) {
-      return PromiseReject(error);
+      promise.reject(error);
     }
 
     return promise.promise;