Add check for Mintemp/Maxtemp errors before running autoload

[awenelo]

During a Mintemp error, if the filament sensor newly detects the presence of filament (filament sensors state goes from 0 to 1) the Autoload preheat menu no longer opens.

This fixes #2605

Tests:

• Compiled with PF-build.sh
• Turned on printer and inserted filament, Autoload still runs.
• Unplugged Hotend thermistor, waited for Mintemp to trigger. Inserted filament. Autoload Didn't run.
• Shorted Hotend thermistor connection on board, waited for alarm(Maxtemp). Inserted filament. Autoload Didn't run.
• Unplugged Heatbed thermistor, waited for Mintemp to trigger. Inserted filament. Autoload Didn't run.
• Shorted Heatbed thermistor connection on board, waited for Maxtemp to trigger. Inserted filament. Autoload Didn't run.

[awenelo]

Closing in favour of #2788, which checks more possibilities.