Cannot use URL for config icon #19075
Description
Windows Terminal version
1.22.11751.0
Windows build number
10.0.26100.4351
Other Software
No response
Steps to reproduce
In settings when you insert a url icon (such as OpenSUSE's https://static.opensuse.org/favicon.ico), after inserting the icon displays normally. When hitting SAVE it reported it was invalid.
Expected Behavior
No response
Actual Behavior
After updating to 1.22.11751.0, URL icon cannot be used as config icon. When first launching after updating it reported that it finds an "invalid" config icon and changed it back to default (which means it was valid before).
