Allow dynamic deep sleep run time like the set_sleep_duration

**Describe the problem you have/What new integration you would like**

I would like to be able set the deep sleep run duration dynamically like the "set_sleep_duration"

**Please describe your use case for this integration and alternatives you've tried:**

I have a battery powered sensor that wakes up every hour for 30 seconds to check for a calendar event.
If there is an event that day I turn on an indicator LED, in this state I sleep for 5 minutes and would like the run duration to be set to 1 minute, then when the calendar event is over (the next day) I want to set the run duration back to 30 seconds.

**Additional context**

No files or tests are named. Start by locating the existing set_sleep_duration entry point and the deep-sleep run-duration handling, then determine how a duration can be changed for later wake cycles. Done means the sensor can use a one-minute run duration during an event and restore 30 seconds afterward.

Written by the indexing model from the issue text.