Make constant for test language in NodaWikidataFetcherTest public, allowing reuse

tests/NodaWikidataFetcherTest.php

@@ -20,7 +20,7 @@ require_once __DIR__ . '/../../MDMysqli/test_connections.conf.php';
 final class NodaWikidataFetcherTest extends TestCase {
 
     // Test for getting translations: Telugu
-    private const TEST_LANG = 'te';
+    public const TEST_LANG = 'te';
 
     /**
      * Test to check whether the HTML page is correctly generated.