duckyPad not entering sleep mode when woken up by HID event

[jose1711]

To reproduce:

• set sleep time (e. g. 3 minutes)
• wait until DP is asleep
• wake DP by sending a HID event (using a modified ex1_open.py from profile autoswitcher - sending a "next profile" action)
• DP is active again
• do not press any key, just wait for another timeout

Expected behaviour:

• DP goes to sleep again

Actual behaviour:

• DP remains up indefinitely