[Bug] Slider widget not displaying

[lethargii]

Describe the bug
When using the slider widget only the label is showed. This might be due to bad configuration though.

To Reproduce
Just add the slider widget in the config file as so :
"slider": {
"label": "󰍬",
"cmd_setter": "wpctl set-volume @DEFAULT_AUDIO_SOURCE@ $value",
"cmd_getter": "wpctl get-volume @DEFAULT_AUDIO_SOURCE@ | awk -F ' ' '{print $2*100}'"
},

Expected behavior
When the slider widget is enabled, a slider should be shown.

Screenshots

Desktop (please complete the following information):

• OS: Fedora Workstation 44 Beta
• Version 0.12.6