Fix recording of wake_alarm

[dhalbert]

• Fixes alarm.wake_alarm not set upon wake from deep sleep #5343.

alarm.wake_alarm was not being set properly after a real or fake deep sleep. I moved the responsibility for keeping track of whether the board had just hard-restarted to main.c, instead of having it in common-hal. The most recent wake alarm is now recorded in alarm.wake_alarm either after a hard-reset, or after a simulated (fake) deep sleep.

Light sleep was not setting alarm.wake_alarm. I did this in a port-independent way.

Also did a minor doc fix in alarm.

It looks like circuitpython.pot got out of sync with the code base at some previous point. It was using the older lowercase filename is31fl3741.c instead of IS31FL3741.c. Hence the merge to circuitpython.pot

[tannewt]

Thank you for the fix!