RTC: Enable blue light schedule to work with real RTC

[stianKristensen]

• Enables the blue light schedule to work for the new Miyoo Mini V4 with RTC (or earlier revisions that have been modded).
• Prevent the blue light filter from always starting enabled on boot when the schedule says it should be off.
• Removed the network requirement, instead opting to blindly follow the current clock time if schedule is enabled.

[Aemiii91]

I'd like if we checked for the noTimeRestore flag, instead of showing the options for all.

[stianKristensen]

I'd like if we checked for the noTimeRestore flag, instead of showing the options for all.

Good idea! I'll change the checks for the miyoo mini + that I removed to instead check the noTimeRestore.

[stianKristensen]

Correction: I'll add to the checks so that they will be visible if it is a mini plus OR the noTimeRestore exists (so non-rtc mini plus with network time still works)

[stianKristensen]

I've added what you suggested, along with making sure the schedule options are always available if the .blf flag exists. This allows Miyoo Mini Plus owners without RTC to still turn off the schedule if they've turned off the network sync.

[Aemiii91]

Looks great!