tests: fix: limit platforms in boot.with_mcumgr.test_upgrade_ble

Missed in #91596 that more platforms are added in common part.
Excluded nrf9160dk/nrf9160 and nucleo_wba55cg from
configuration with BLE.

Signed-off-by: Grzegorz Chwierut <grzegorz.chwierut@nordicsemi.no>