hm-modules: swayidle: lock files from superseded timeouts are not deleted

[spikespaz]

When a timeout for a specific power state creates a lock file, and then another timeout of the same power state also creates a lock file, the resumeScript of the preceding timeouts is not run, and lock files from those timeouts are not cleared.

For example, take the following timeouts when on battery:

• A. Dim the screen after 120 seconds.
• B. Turn off the screen after 240 seconds.
• C. Suspend after 300 seconds.

Once timeout C is run, upon the resumeScript, the resume scripts for A and B are not run. This means that the lock files and/or state they affect is not restored upon completion of C.