ESP32 TouchAlarm does not work

[dhalbert]

Tried to get ESP32 TouchAlarm to work while working on #8003. I cannot seem to set a threshold that works. A low threshold never triggers, a high threshold triggers all the time. There may be something wrong with the setup. I instrumented at the IDF raw values using TouchIn and added some comments about that as part of #8003.

TouchAlarm works fine on ESP32-S2 and ESP32-S3 after #8003.