Prefer the Switchify computer name for macOS PCs

[enaboapps]

Summary

Use the macOS Computer Name published in the Switchify BLE status instead of Android’s generic BluetoothDevice.name value, which CoreBluetooth exposes as Mac.

Acceptance criteria

• Parse the existing status platform field.
• macOS endpoints use status displayName across connection, control-switcher, bottom-strip, and accessibility-service picker surfaces.
• Generic Mac is not shown as the macOS row summary.
• Windows and status payloads without platform retain the existing Bluetooth device-name preference.
• Persisted pairing and protocol formats remain unchanged.
• Unit coverage verifies macOS, Windows, legacy, and fallback behavior.

Coordination

Requires the linked switchify-pc change to publish the configured macOS Computer Name.

[enaboapps]

Implementation is in draft PR #2775. Coordinated macOS name publication is in switchifyapp/switchify-pc#559.