Fix block till done in create entry config flow tests (#42290)

.../scaffold/templates/config_flow/tests/test_config_flow.py

tests/components/alarmdecoder/test_config_flow.py

tests/components/august/test_config_flow.py

tests/components/blink/test_config_flow.py

tests/components/bond/test_config_flow.py

tests/components/control4/test_config_flow.py

tests/components/coolmaster/test_config_flow.py

tests/components/devolo_home_control/test_config_flow.py

tests/components/dexcom/test_config_flow.py

tests/components/doorbird/test_config_flow.py

tests/components/elkm1/test_config_flow.py

tests/components/flick_electric/test_config_flow.py

tests/components/flume/test_config_flow.py

tests/components/griddy/test_config_flow.py

tests/components/harmony/test_config_flow.py

tests/components/hlk_sw16/test_config_flow.py

tests/components/homekit/test_config_flow.py

tests/components/hunterdouglas_powerview/test_config_flow.py

tests/components/insteon/test_config_flow.py

tests/components/isy994/test_config_flow.py