fix(ext/node): Re-enable alloc max size test (#21059)

Ref #21036

cli/tests/node_compat/test/parallel/test-buffer-alloc.js

@@ -13,14 +13,12 @@ const assert = require('assert');
 
 const SlowBuffer = require('buffer').SlowBuffer;
 
-// TODO(bartlomieju): this test started failing after update to V8 12.0,
-// maybe the size limit was increased?
-// Verify the maximum Uint8Array size. There is no concrete limit by spec. The
-// internal limits should be updated if this fails.
-// assert.throws(
-//   () => new Uint8Array(2 ** 32 + 1),
-//   { message: 'Invalid typed array length: 4294967297' }
-// );
+// Verify the maximum Uint8Array size.
+// (see https://github.com/tc39/ecma262/pull/3052).
+assert.throws(
+  () => new Uint8Array(2 ** 53),
+  { message: 'Invalid typed array length: 9007199254740992' }
+);
 
 const b = Buffer.allocUnsafe(1024);
 assert.strictEqual(b.length, 1024);