ionic cap copy --no-build --watch not working

`ionic cap copy --no-build --watch`
expected behavior keep running and copy files to ios, android, web at file change
actual runs once

before I need to develop for ios I just run this command and open native ide
`ionic capacitor run ios -l --external`
so after file change I just

1. need to click run app button in xcode

but now I'm adding feature to connect to iot WiFi Access Point therefore
I can't use `ionic capacitor run ios -l --external` cause it need my ios device to be connected to the same network as my computer to work properly and get livereloads

So after every file change I need to

1. run `ionic build --watch` for file changes
2. then after every change manually run `ionic cap copy --no-build --watch` (--watch not working as expected run once)
3. then in xcode run app button

Start by tracing the `ionic cap copy` command and its `--watch` handling, then reproduce `ionic cap copy --no-build --watch` while changing files. Done means the command remains running and copies changes to iOS, Android, and web targets instead of exiting after one copy.

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