Once set, the outside temp sensor field can not be cleared anymore

[psych0d0g]

Describe the bug
if you play around with the frontend, and configure an external temp sensor in it, you can not remove it anymore.

To Reproduce
open manager
go to entities / Weather & Time
add an outside temperature sensor
try to get rid of a once set value to restore the default

Expected behavior
either a reset button right besides the select button, or a "Default" option in the selection screen

Screenshots
N/A

Environment info (please complete the following information):

• Home Assistant
• Browser NA
• NSPanelManager version 0.1.46_public_beta
• NSPanel Firmware version NA

Additional context
NA