Discard EEPROM auto save just rolling main screens with UP/DOWN

[d51r3verse]

I had bad experience of flash wearout issue with several devices( not yet on i6x ).
Advertised over 100K RW on datasheets, but it was happened on Winbond too.

I personally keep it with Channels monitor or nothing on the main screen. When I change main screen, it was temporal.
Therefore, I suggest...
Do not keep track and save EEPROM while just rolling/travelling main screens.
It will save EEPROM life little bit and also keep default(prefer) screen while next boots without any button actions.

Or, compilation time optin to disable to using 5 of any main screen( I wish to disable except channels monitor 😃 ).

[ajjjjjjjj]

I was bothered by it too. Definitelly something to improve here.

[ajjjjjjjj]

Fixed on master in: 6049cb5