[spinbox] Don't use QQC2 items when we should use PlasmaComponents
BUG: 423445 FIXED-IN: 5.72
Now the plus and minus symbols in the PC3 SpinBox respect the color of the Plasma theme when it differs from the application color scheme:
BUG: 423445 FIXED-IN: 5.72
Now the plus and minus symbols in the PC3 SpinBox respect the color of the Plasma theme when it differs from the application color scheme: