fix(suite-native): useEmptyPassphrase on undefined device instance #874

Job	Run time
build-web	5m 3s
e2e-test-suite-web (@group_suite, trezor-user-env-unix, 1)	10m 9s
e2e-test-suite-web (@group_device-management, trezor-user-env-unix, 1)	12m 3s
e2e-test-suite-web (@group_settings, trezor-user-env-unix, 1)	10m 2s
e2e-test-suite-web (@group_metadata, trezor-user-env-unix, 1)	11m 50s
e2e-test-suite-web (@group_passphrase, trezor-user-env-unix, 1)	8m 37s
e2e-test-suite-web (@group_other, trezor-user-env-unix, 1)	6m 2s
e2e-test-suite-web (@group_wallet, trezor-user-env-unix bitcoin-regtest, 1)	20m 25s
e2e-test-suite-web (@group_firmware-update, trezor-user-env-unix)	2m 58s
	1h 27m 9s

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