Perhaps these are what you are looking for.
chaotic-aur/xdg-desktop-portal-hyprland-git 1:r322.22e7a65-1 [207.43KiB 544.25KiB]
xdg-desktop-portal backend for hyprland
extra/xdg-desktop-portal-hyprland 1.2.3-1 [130.38KiB 350.25KiB]
xdg-desktop-portal backend for hyprland