Dev ui config edit crashes when I try to unset a property

[emmanuelbernard]

On an app with Hibernate Panache,

And the following config file

# set DB - only mandatory part
quarkus.datasource.db-kind=postgresql
quarkus.datasource.jdbc.url=jdbc:postgresql:quarkus-demo
quarkus.datasource.username=quarkus-demo
quarkus.datasource.password=quarkus-demo

# Hibernate details
quarkus.hibernate-orm.database.generation=drop-and-create
# don't do this at home !!!!!!
%prod.quarkus.hibernate-orm.database.generation=drop-and-create
%prod.quarkus.hibernate-orm.sql-load-script=import.sql
quarkus.hibernate-orm.log.sql=true

I load dev ui config editor and try to unset quarkus.hibernate-orm.log.sql by setting it to empty. When I hit update I get the following error

io.quarkus.runtime.configuration.ConfigurationException: One or more configuration errors have prevented the application from starting. The errors are:
  - SRCFG00014: Property quarkus.hibernate-orm.log.sql is required but the value was not found or is empty

Resulted in: java.lang.RuntimeException: Failed to start quarkus
	at io.quarkus.runner.ApplicationImpl.doStart(ApplicationImpl.zig:907)
	at io.quarkus.runtime.Application.start(Application.java:90)
	at io.quarkus.runtime.ApplicationLifecycleManager.run(ApplicationLifecycleManager.java:97)
	at io.quarkus.runtime.Quarkus.run(Quarkus.java:66)
	at io.quarkus.runtime.Quarkus.run(Quarkus.java:42)
	at io.quarkus.runtime.Quarkus.run(Quarkus.java:119)
	at io.quarkus.runner.GeneratedMain.main(GeneratedMain.zig:29)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at io.quarkus.runner.bootstrap.StartupActionImpl$3.run(StartupActionImpl.java:134)
	at java.base/java.lang.Thread.run(Thread.java:834)

[emmanuelbernard]

@stuartwdouglas