scripts: twister: pylib: not needed board id with BOOT-SERIAL mode

STM32CubeProgrammer does not support flashing in BOOT-SERIAL mode
using the device's serial number.

Signed-off-by: Fabrice DJIATSA <[email protected]>

Author: djiatsaf-st

scripts/pylib/pytest-twister-harness/src/twister_harness/device/hardware_adapter.py

@@ -91,7 +91,7 @@ def _prepare_runner_args(self) -> tuple[list[str], list[str]]:
             elif runner == 'jlink':
                 base_args.append('--dev-id')
                 base_args.append(board_id)
-            elif runner == 'stm32cubeprogrammer':
+            elif runner == 'stm32cubeprogrammer' and self.device_config.product != "BOOT-SERIAL":
                 base_args.append(f'--tool-opt=sn={board_id}')
             elif runner == 'linkserver':
                 base_args.append(f'--probe={board_id}')