fix(random): handle seed initialization correctly

The previous implementation used a direct property check (`config.seed`),
which could inadvertently treat falsy values like "0" as missing. This
caused incorrect random seed initialization in some cases.

Changed the condition to explicitly check for the presence of the `seed`
property using `Object.prototype.hasOwnProperty.call()`. Now, seed
initialization handles falsy but valid seed values correctly.

lib/node_modules/@stdlib/random/shuffle/lib/factory.js

@@ -63,7 +63,7 @@ function factory( config ) {
 			throw err;
 		}
 	}
-	if ( config && config.seed ) {
+	if ( config && Object.prototype.hasOwnProperty.call( config, 'seed' ) ) {
 		rand = randu({
 			'seed': config.seed
 		});