Cancel commands queueing for the umbrella driver (#9052)

lib/appium.js

@@ -41,6 +41,13 @@ class AppiumDriver extends BaseDriver {
     this.pendingDrivers = {};
   }
 
+  /**
+   * Cancel commands queueing for the umbrella Appium driver
+   */
+  get isCommandsQueueEnabled () {
+    return false;
+  }
+
   sessionExists (sessionId) {
     const dstSession = this.sessions[sessionId];
     return dstSession && dstSession.sessionId !== null;