timed_set_ms is not respected always.

[athanassis]

• I have read the README.md file and visited the Documentation to see if the information there helps.

Describe the bug
I'm using the timed_set_ms in output pins which drive latching relays. The configured value (100ms) is not always followed by mqtt-io. I observe delays in automatically setting the gpio pin back to its initial state of up to 6s. This causes a buzz sound in the relays which is annoying.
The frequency that the delays are observed is ~2.3% (98 occurrences / 4201 total events). This is from a log file of 1 year period, so I hear the buzz in the relays nearly every ~3.5 days on average.

Expected behavior
The timed_set_ms should be respected in all cases.

Error messages and traceback
Here is a sample from a log showing a delay:

2023-02-20 18:19:42 mqtt_io.server [INFO] Digital output 'corridor_lights_relay' set to False (on)
2023-02-20 18:19:48 mqtt_io.server [INFO] Setting digital output 'corridor_lights_relay' back to its previous value after configured 'timed_set_ms' delay of 100ms
2023-02-20 18:19:48 mqtt_io.server [INFO] Digital output 'corridor_lights_relay' set to True (off)```

Here is a sample from an event working as expected:

2023-02-20 18:48:37 mqtt_io.server [INFO] Digital output 'corridor_lights_relay' set to False (on)
2023-02-20 18:48:37 mqtt_io.server [INFO] Setting digital output 'corridor_lights_relay' back to its previous value after configured 'timed_set_ms' delay of 100ms
2023-02-20 18:48:37 mqtt_io.server [INFO] Digital output 'corridor_lights_relay' set to True (off)

Config

  - name: corridor_lights_relay
    module: kili
    pin: 8
    initial: 'high'
    inverted: True
    timed_set_ms: 100```

Hardware

• Platform: Raspberry Pi
• Connected hardware: GPIO is connected to 5V 8 Relay board. The Relays from this board are used to emulate button presses towards latching relays in the electric panel of the house.

System:

• OS: Raspbian
• Python version: 3.7.3
• User you're running as: pi
• Using a virtualenv?: no

Additional context
I run mqtt-io with Deployment using supervisor