[Bug]: applications silently fail to run when its runner is missing

[rmnscnce]

Describe the bug

Bottles did not raise a warning or error of any kind to the users if the user want to run an app that is configured to use a missing runner.

To Reproduce

1. Install a runner through Bottles' preferences (e.g. "caffe-7.7")
2. Create a Bottle and install an application
3. Make sure it's using the said runner, if not, set it to use that
4. Remove the runner
5. Try to run the said application, it will silently fail

Package

Flatpak from Flathub

Distribution

Fedora Linux 36.20220806.0 (Silverblue)

Troubleshooting Logs

Version: 2022.7.28-brescia-2
Display:
    X.org: true
    X.org (port): :99.0
    Wayland: true
Graphics:
    vendors:
        amd:
            vendor: amd
            envs:
                DRI_PRIME: '1'
            icd: /usr/lib/x86_64-linux-gnu/GL/vulkan/icd.d/radeon_icd.x86_64.json:/usr/lib/i386-linux-gnu/GL/vulkan/icd.d/radeon_icd.i686.json
    prime:
        integrated: null
        discrete: null
Kernel:
    Type: Linux
    Version: 5.18.16-200.fc36.x86_64
Distro:
    Name: GNOME
    Version: '"42 (Flatpak runtime)"'
Disk:
    Total: 3817271296
    Free: 3817123840
RAM:
    MemTotal: 7.1GiB
    MemAvailable: 3.5GiB
Bottles_envs: null

Display Protocol

Wayland

Display Backend used by Bottles

Wayland

Additional context

No response