Make the "Auto-Stop Other Sources" feature of Optical Input resilient to power failures.

[didierboudon]

Describe the bug
The "Auto-stop other Sources" option of the Optical input reverts to ON each time the system boots up

HiFiBerryOS version
20221118

HiFiBerry sound card
Beocreate 4 channel amplifier

To Reproduce
Steps to reproduce the behavior:

1. Go to "Sources"
2. Click on "Optical input" (that should be enabled)
3. Deactivate the "Auto-Stop Other Sources" option (OFF)
4. Restart the system
5. The "Auto-Stop Other Sources" is activated

Expected behavior
One would expect the "Auto-Stop Other Sources" feature to remain in its previous state when the system starts.

Screenshots
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Browser (if applicable)
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Additional context
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