main/device-pine64-pinephone: depend on sway instead of sway-virtual

Changing pinephone's sway config subpkg to only depend on sway. Based on discussion here: https://gitlab.com/postmarketOS/pmaports/-/merge_requests/3845 I understand that after the next release of sway (which happened today) sxmo-sway would be retired as all the required patches were in mainline sway. This shouldn't be merged until the sxmo device package is installing regular sway instead.

Depends on upstream MR being merged: https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/61278