apps: kwallet, ksshaskpass, grsync
1. dolphin connects via smb to smb-server. kwallet prompts correctly for pw.
2. use grsync to sync files from local to smb-server.
3. No matter which way (with "-e ssh" or without), kwallet does NOT prompt for
pw (nor for fingerprint).
4. copy the exact same command (rsync -r -t -v --progress -e ssh <source>
<dest>) into terminal and it asks for pw inside terminal and the sync works. 
5. bypass kwallet and use grsync with "--password-file=pw" and the sync works.

(Tumbleweed 20230119, KDE plasma 5.26.5)