on a legacy form view, do an action in target new
The view in target new should, during its onchange, trigger a ValidationError
Before this commit, the dialog_container was stuck in an error loop.
This was because the received error was never an instance of Error, rather it was
a legacy error event. So it was never transmitted upstream were the ErrorHandler could remove
the dialog in error from is dialog array.
After this commit, the ValidationError mesage is displayed.
This commit additionally fixes another issue:
An action in target main that failed to render erased the whole DOM. This is not what we want,
at least for now. Imagine a list view, open a record, this record fails to load. We still want to be
on the list view, not in a blank state.
Lucas Perais (lpe)
0cec54b92c