Verify the available device before run command

Most of the time the testing mobile disconnect automatically or other some reason, and when I try to run the app on the device it show this message "Could not find target matching { id: 'xxxxxxxx' }", I think must **cordova run** command should verify the available device then start the generating apk process. This should save developers time.

Thank you.

The issue names the cordova run command but no source file or test. Trace the command’s device-selection and startup flow, reproduce the disconnected-device case, and verify that APK generation does not start when the target is unavailable.

Written by the indexing model from the issue text.