Camera: Fix Idle fence timeout in StatusTracker

The Fence wait method expects a timeout argument in
milliseconds. Rename the timeout constant accordingly
and convert the value to milliseconds before passing
it to "Fence::wait()".

Flag: NONE bugfix
Bug: 443854247
Test: Camera CTS
Change-Id: I71ce111031a7dd5b6491f67a68a5f85136cc4e24