Tutorial freezing during mic testing step

## Description
When leaving the tutorial sitting at the mic step for several seconds, the entire Swadge will freeze until rebooted.

## Expected behavior
No freeze.

## Reproduction Steps
- Open the tutorial mode
- Complete all steps until the mic test
- Wait about 20 seconds

## Affected Version
- Platform: Firmware
- git branch: main
- git hash: e55900577