Wrong Boot Mode When Multi-Dut Tests (RDT-108)

[hfudev]

As many github actions jobs are failing, multi-dut tests would fail with the error "wrong boot mode ..." when detecting the port.
and this error often happens on the 2nd dut.

Not 100% reproducible, but the failure ratio is higher with earlier python versions.

[hfudev]

Reproduced this bug on RaspberryPi on both aarch64 and armv7l. Either connect with USB hub or directly.

Can't reproduce locally on dev machine, neither with USB hub nor connect directly.

[hfudev]

Try to switch the order of multi-dut tests, like change esp32/c3 tests to c3/32 tests, only the first dut can be connected, the second one would fail to connect with error "wrong boot mode"