py/scope: Add assert to check that low numbered qstrs do fit in uint8_t.
py/scope: Add assert to check that low numbered qstrs do fit in uint8_t.

bvernoux/micropython,adafruit/circuitpython,kerneltask/micropython,kerneltask/micropython,selste/micropython,pramasoul/micropython,MrSurly/micropython,adafruit/circuitpython,adafruit/circuitpython,tobbad/micropython,adafruit/circuitpython,henriknelson/micropython,selste/micropython,tobbad/micropython,pramasoul/micropython,tobbad/micropython,tobbad/micropython,selste/micropython,selste/micropython,pramasoul/micropython,henriknelson/micropython,adafruit/circuitpython,bvernoux/micropython,MrSurly/micropython,bvernoux/micropython,pramasoul/micropython,henriknelson/micropython,kerneltask/micropython,MrSurly/micropython,adafruit/circuitpython,henriknelson/micropython,kerneltask/micropython,pramasoul/micropython,bvernoux/micropython,MrSurly/micropython,MrSurly/micropython,henriknelson/micropython,kerneltask/micropython,bvernoux/micropython,tobbad/micropython,selste/micropython