remdra

Would be great to have a boolean signal as source of the input. [signal-busy.TGZ](https://github.com/victos/angular-opensource/files/14395627/signal-busy.TGZ)

In angular 17 standalone app, the entire app is disabled, not only the target part. Steps to reproduce: 1. create a new app: ng new signal-busy --skip-tests --standalone --no-ssr --directory=....

incremental save

2

### What are you working on? In order to sign pdf, an incremental update of the existing pdf is required. A solution for this issue is provided in PR: https://github.com/Hopding/pdf-lib/pull/1417....