The package postmarketos-hidden-desktop-entries has been removed. If you still have it installed, run:
# apk del postmarketos-hidden-desktop-entries
postmarketos-hidden-desktop-entries was introduced to improve the user experience in the cases where some applications appeared as available, but could not be lauched graphically. Since its introduction, all the problems that prevented the apps to be launched have been fixed, making the package unnecessary.
Related: pmaports!4086