[Bug]: "Add Desktop Entry" does not work in flatpak version

[DetachHead]

Describe the bug

the "Add Desktop Entry" entry does not seem to do anything. it does not show up in my applications menu, and no entry is present in ~/.local/share/applications

To Reproduce

1. open a bottle
2. click the 3 dots icon next to one of its programs
3. click "Add Desktop Entry"
4. click "Create"

Package

Flatpak from Flathub

Distribution

Linux Mint 22.3 - Cinnamon 64-bit

Debugging Information

Official Package: true
Version: '62.0'
DE/WM: cinnamon
Display:
    X.org: true
    X.org (port): :0
    Wayland: false
Graphics:
    vendors:
        nvidia:
            vendor: nvidia
            envs:
                __NV_PRIME_RENDER_OFFLOAD: '1'
                __GLX_VENDOR_LIBRARY_NAME: nvidia
                __VK_LAYER_NV_optimus: NVIDIA_only
            icd: /usr/share/vulkan/icd.d/nvidia_icd.json
            nvngx_path: /usr/lib/x86_64-linux-gnu/GL/nvidia-580-126-09/lib/nvidia/wine
    prime:
        integrated: null
        discrete: null
Kernel:
    Type: Linux
    Version: 6.8.0-101-generic
Disk:
    Total: 16786710528
    Free: 16786526208
RAM:
    MemTotal: 31.3GiB
    MemAvailable: 8.9GiB
Bottles_envs: null

Troubleshooting Logs

Traceback (most recent call last):
  File "/app/share/bottles/bottles/backend/utils/manager.py", line 247, in prepare_install_cb
    portal.dynamic_launcher_install(
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        ret["token"],
        ^^^^^^^^^^^^^
    ...<11 lines>...
        )
        ^
    )
    ^
gi.repository.GLib.GError: g-io-error-quark: GDBus.Error:org.freedesktop.portal.Error.InvalidArgument: Desktop entry given to Install() not valid (36)

Additional context

i know installing bottles using anything other than the flatpak is not supported, but i suspected that this was an issue with flatpak sandboxing so here some additional things i tried:

• tested it using this unofficial appimage - worked
• tried giving bottles every permission in flatseal - didn't work

[ignapk]

Hi, thanks for this bug report, it has already been reported in #4402, see my comment explaining your situation in #4402 (comment). That unofficial appimage simply hasn't been updated yet to version 62 which is why there is a difference.