feat(tests): sync received responses

to prevent "unexpected response to Initialize" errors

tests/conftest.py

@@ -286,6 +286,7 @@ def client(
     _raw_client.reset_debug_features()
     _raw_client.open()
     try:
+        _raw_client.sync_responses()
         _raw_client.init_device()
     except Exception:
         request.session.shouldstop = "Failed to communicate with Trezor"

tests/ui_tests/__init__.py

@@ -61,6 +61,7 @@ def screen_recording(
         yield
     finally:
         client.ensure_open()
+        client.sync_responses()
         # Wait for response to Initialize, which gives the emulator time to catch up
         # and redraw the homescreen. Otherwise there's a race condition between that
         # and stopping recording.