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

core

Is this a regression?

No

Description

toSignal() can not set internal state (state.set() when called from computed(), because of NG0600 ("Writing to signals is not allowed in a computed or an effect by default").

Please provide a link to a minimal reproduction of the bug

https://stackblitz.com/edit/angular-hjphb7?devToolsHeight=33&file=src/main.ts

Please provide the exception or error you saw

ERROR
Error: NG0601: `toSignal()` called with `requireSync` but `Observable` did not emit synchronously.

ERROR
Error: NG0600: Writing to signals is not allowed in a `computed` or an `effect` by default. Use `allowSignalWrites` in the `CreateEffectOptions` to enable this inside effects.

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

@angular/core 16.0.0-rc.4

Anything else?

It is reproducible without Component's template, so the issue is not caused by the template: https://stackblitz.com/edit/angular-rbp4uq?devToolsHeight=33&file=src/main.ts