Feature Request: Option to use device.name instead of friendly_name for Entity IDs in Tasmota MQTT Discovery

[Bodo08]

Feature Request: Option to use device.name instead of friendly_name for Entity IDs in Tasmota MQTT Discovery

Description:
Currently, the Tasmota MQTT Discovery integration in Home Assistant primarily uses the device’s friendly_name for naming entity IDs (e.g., switch.friendly_name). This causes entity IDs to change whenever the friendly name on the device is modified. For users who want stable and consistent entity IDs, this behavior is problematic.

I would like to request an option (or alternative default) to use the device’s device.name instead for entity ID generation, as this is generally more stable and rarely changed. This would improve consistency and avoid breaking automations, scripts, or dashboards when friendly names are updated.

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Why is this important?

• The friendly_name is user-editable and can change frequently, which leads to unexpected entity ID changes.
• The device.name is usually set once during setup and remains stable.
• Users should have flexibility to choose which naming scheme suits their needs best.

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Current situation:

• The integration currently defaults to using friendly_name for entity IDs.
• Changing the friendly name results in changing entity IDs.
• Users need to manually adjust entity IDs or automations when names change.

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Proposed solution:

• Add a configuration option in the Tasmota integration to select whether friendly_name or device.name is used for entity ID generation.
• The default behavior can remain using friendly_name for backward compatibility, or set the default to the new proposed scheme for future clarity. (I would prefer the second option)
• Possibly offer a migration path for existing setups to switch naming schemes.

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Additional notes:

• This would improve long-term stability and maintainability of Tasmota entities in Home Assistant.
• It gives users control over naming conventions to better fit their workflows.