(non-bug) Allow cancelling of bootnext

[NP-chaonay]

Suggest feature for cancel EFI BootNext request.

noted that there is difference between 1st optioned selected and none selected.

For example on system that able to disable EFI entry. And none of all is enabled

Set 1st option as BootNext will boot the 1st while unset BootNext cause EFI warning of no bootable device.

I have to disable all EFI entry because Surface Laptop Studio only have UEFI password not Boot password.
So I can boot system without UEFI password, and that cause security problem for me (ex: getting data or damage system through making Windows RE booted up)
So I need disable all EFI entry and boot up via UEFI setup menu (require UEFI password).
And since I have Windows 11 + external Ubuntu installation, I have to set BootNext for convenience.
But sometimes I just need to shutdown without BootNext, so I request this feature.
Or else I have choose non-bootable entry such as PXE Network, but that also cause security concern.