Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32wl/STM32WL5x_CM0P/RCC/APB1RSTR2#0x0
APB1 peripheral reset register 2
Low-power UART 1 reset
Low-power timer 2 reset
Low-power timer 3 reset
https://github.com/modm-io/cmsis-svd-stm32