Minor issues with 22.04 theme

[fthx]

Marco already told us that lock screen is being resolved:

Yaru Accent Colors are coming to Jammy!

Thanks to the fantastic Yaru Team (special thanks to @muqtxdir-m!), with the help of the Canonical design team (@lyubomir-popov for the final colors and @elioqoshi for the initial work), we’re happy to announce that Ubuntu 22.04 will support even further theme customization, by giving users ability to change accent colors. The Yaru theme will support 10 accents applied both to the dark and light variants of the theme, but also to gnome-shell and the icons. And all this will allow to personal…