This will allow saving effects when current document is saved for any
reason, including at application shutdown.
If effect is not yet saved once (i.e. it doesn't have a name yet), it
will not be saved in response to global save triggers to avoid
complications with requiring user input to provide the name.
Fixes: QDS-11436
Fixes: QDS-11446
Change-Id: I412ee4893e926d527b4f03f5f6c0c9b4e923bc1e
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>
