Fixed regression in 3.0.1 affecting Xdebug 2

Author: johnstevenson

src/XdebugHandler.php

@@ -646,6 +646,7 @@ private static function setXdebugDetails(): void
         // See if xdebug.mode is supported in this version
         $iniMode = ini_get('xdebug.mode');
         if ($iniMode === false) {
+            self::$xdebugActive = true;
             return;
         }