Work around device tracker component deleting devices #1
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The device tracker component level code deletes any registered devices that are associated only with device_tracker entities. Not only that, but it will also (indirectly) delete those entities from the entity registry. This code was meant to fix behavior of older HA versions and was supposed to have been removed after 2022.6, but never was. Here is the culprit:
https://github.com/home-assistant/core/blob/78c1efa7d4b3faaf6a2bf63d71a64095453e0c97/homeassistant/components/device_tracker/config_entry.py#L54-L74
The result is that any user modifications stored in the entity registry are lost.
This change works around that code & problem by disassociating the device_tracker entities from their devices at shutdown so that at startup, the device tracker component level code won't try to delete the devices. When this integration is loaded (i.e., setup), it will reassociate the entities with their corresponding devices.