Display Issues

[bhmyers66]

on Ender 3 V3 K3 Nebula:

1. extruder temperature will toggle between one line and two lines:
   204/
   205
   instead of 204/205

when microstepping Z axis and coming from a number +/- zero back to zero, the number goes to scientific notation to deal with "decimal dust"

disable buttons when an action is running, currently, pressing any button more than once buffers the actions. For example, homing buttons inactive during homing, macro buttons disabled during macro processing