drivers: flash_shell: sample.drivers.flash.shell does not produce output on nrf54l15DK

[katgiadla]

Describe the bug
The sample samples/drivers/flash_shell/sample.drivers.flash.shell does not produce output.

Observed for:

• nrf54l15dk/nrf54l05/cpuapp
• nrf54l15dk/nrf54l15/cpuapp

To Reproduce
Steps to reproduce the behavior:

1. go to your zephyr dir
2. call ./scripts/twister -s sample.drivers.flash.shell -p nrf54l15dk/nrf54l15/cpuapp --device-testing --device-serial /dev/ttyACM1 -v --inline-logs --west-flash="--erase"
3. See console output with error

Expected behavior
Valid console output

Impact
Not clear

Logs and console output
Missing output

Environment (please complete the following information):

• OS: Ubuntu 20.04.1 LTS
• Toolchain Zephyr SDK 0.17.0
• Commit SHA or Version used: 7a873e200a04236d1a28526c9501c01a16bf0aba

Additional information:
Bisection does not indicate reason of the issue.

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