There were three principal sources of errors and warnings:
1. Un-ported `onFooChanged` statements
2. `config.fontSize` being unconditionally referenced from components
without access to it (it comes from the SDDM config)
3. Accessing units from the context property rather than the singleton
All are fixed now. Tested with:
1. `sddm-greeter --test-mode --theme ~/kde/usr/share/sddm/themes/breeze/`
2. `~/kde/usr/lib64/libexec/kscreenlocker_greet --testing --theme ~/kde/src/plasma-workspace/lookandfeel`
3. `/kde/usr/lib64/libexec/ksmserver-logout-greeter --fakearg`
No regressions found.
BUG: 425349
FIXED-IN: 5.20