Add logs for folding sleep behavior

Adding extra logs to investigate issues
when the devices doesn't go to sleep
unexpectedly after folding.

In b/374240152 the device didn't show the unlocked
keyguard after folding even though there were no
wakelocks present.

Flag: EXEMPT bugfix
Bug: 374240152
Test: manually verify log messages
Change-Id: I16a82546c068a35fbde3b74dcdac27c1ea9f5986