This allows for the device name to be set at runtime, possible uses for this include a custom display screen that lets you type it in using the keycode state event, future configuration in zmk studio, or altering it per profile as per #1169
* Core Zephyr changes tweaked the output from the BT stack for our unit tests.
Co-authored-by: Cem Aksoylar <caksoylar@users.noreply.github.com>