kcm: Make remote printer query async
Remove the call to "waitTillFinished" to eliminate the use of the nested event loop in the KCupsRequest
Related: #16
Crash: https://crash-reports.kde.org/organizations/kde/issues/38387
Remove the call to "waitTillFinished" to eliminate the use of the nested event loop in the KCupsRequest
Related: #16
Crash: https://crash-reports.kde.org/organizations/kde/issues/38387