Replaced passivenotification messages in DiscoverWindow.qml component with...

Replaced passivenotification messages in DiscoverWindow.qml component with Kirigami.OverlaySheet with copyable text elements

Messages that got replaced are:
 * "Running as root" message during Component.onCompleted handling
 * app.onUnableToFind handler message about invalid resource
 * ResourcesModel.onPassiveMessage handler messages
 * TransactionModel.transaction.onPassiveMessage handler messages

BUG: 403791