Avoid using deprecated InterwikiLoadPrefix hook in test setup

Bug: T270444
Change-Id: I42d0474ae6f758207357373ecb6b4f2f5f853a7d

tests/browser/LocalSettings.php

@@ -4,20 +4,15 @@ $wgRightsUrl = "http://creativecommons.org/licenses/by-sa/3.0/";
 // Allow users to edit privacy link.
 $wgGroupPermissions['user']['editinterface'] = true;
 
-$wgHooks['InterwikiLoadPrefix'][] = function ( $prefix, &$iwdata ) {
-	if ( $prefix === 'es' ) {
-		// return our hardcoded interwiki info
-		$iwdata = [
-			'iw_url' => 'http://wikifoo.org/es/index.php/$1',
-			'iw_local' => 0,
-			'iw_trans' => 0,
-		];
-		return false;
-	}
-	// nothing to do, continue lookup
-	return true;
-};
-$wgInterwikiCache = false;
+// Use hard-coded interwiki information
+$wgInterwikiCache = \MediaWiki\Interwiki\ClassicInterwikiLookup::buildCdbHash( [
+	[
+		'iw_prefix' => 'es',
+		'iw_url' => 'http://wikifoo.org/es/index.php/$1',
+		'iw_local' => 0,
+		'iw_trans' => 0,
+	],
+] );
 
 $wgMinervaPageIssuesNewTreatment = [
 	"base" => true,