devtools signal lookup incorrectly displays signal with empty string

[ducin]

Which @angular/* package(s) are the source of the bug?

Devtools

Is this a regression?

Yes

Description

Please provide a minimal reproduction of the bug

just put this on a component:
value = signal('')

Please provide the environment you discovered this bug in (run ng version)

`@angular/core@17.3.4`

[ducin]

@JeanMeche @AleksanderBodurri We could either do a dirty ugly fix (yet another if in a bad place) or do a proper refactor. I prefer to do the latter. I'm halfway of fixing this already (WIP here), hope to get it done by the end of the week.