Add check for valid error code in translation checks in flows (#128445)

tests/components/generic/test_config_flow.py

@@ -637,6 +637,10 @@ async def test_form_stream_other_error(hass: HomeAssistant, user_flow) -> None:
     await hass.async_block_till_done()
 
 
+@pytest.mark.parametrize(  # Remove when translations fixed
+    "ignore_translations",
+    ["component.generic.config.error.Some message"],
+)
 @respx.mock
 @pytest.mark.usefixtures("fakeimg_png")
 async def test_form_stream_worker_error(