soc: stm32wbax: hci_if: Re-write enable/disable Radio IRQ with irq API

Migrate LINKLAYER_PLAT_EnableRadioIT and LINKLAYER_PLAT_DisableRadioIT
from linklayer_plat.c (hal/stm32 module) and adapt it using irq
Zephyr APIs.
Correct casting of irq type between using NVIC APIs or irq Zephyr APIs

Signed-off-by: Nidhal BEN OTHMEN <nidhal.benothmen@st.com>