Add logging about update cancellation due to lack of progress (#1692)

Author: MikhailSuendukov

sdk/appcenter-distribute/src/main/java/com/microsoft/appcenter/distribute/install/session/SessionReleaseInstaller.java

@@ -187,6 +187,7 @@ public void run() {
 
                 /* Cancels installation if this flag hasn't been reset by progress event. */
                 if (mUserConfirmationRequested) {
+                    AppCenterLog.error(LOG_TAG, "Canceling installation due to lack of progress.");
                     onCancel();
                 }
             }