main/postmarketos-hidden-desktop-entries: stop hiding Cheese

Wait with merging till https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/12086 is merged.

Since https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/12086 the Cheese application won't be installed anymore unless explicitely specified. Applications that usually depend on it now depend on cheese-libs instead.

This means we can stop hiding it and allowing people to install it themselves if they want too