I have forms that uses the template-driven blueprint, so something like this:
Use:
And it'll prevent tag and what is in this tag from submitting enter and shift + enter.
For example: It worked this for me:
And after this, everything under this excample div are prevented from submitting enter and shift + enter.
More info about key combinations:
https://alligator.io/angular/binding-keyup-keydown-events/#key-combinations