Node.js polyfills: Remove errorneous double call to stream.getReader(…

…) in isByobSupported()

getReader can only be called if there isn't already another reader with
an active lock. A double call caused web browsers, which don't need the
polyfill, to mistakenly use the polyfill anyway.

packages/php-wasm/node-polyfills/src/lib/blob.ts

@@ -115,7 +115,6 @@ function isByobSupported() {
 	const file = new File([inputBytes], 'test');
 	const stream = file.stream();
 	try {
-		stream.getReader({ mode: 'byob' });
 		// This throws on older versions of node:
 		stream.getReader({ mode: 'byob' });
 		return true;