pybricks.parameters: Fix tests for imports.

jedi/tests/test_complete_import.py

@@ -121,7 +121,10 @@ def test_from_pybricks_parameters_import():
         "Button",
         "Color",
         "Direction",
+        "Font",
         "Icon",
+        "Image",
+        "ImageFile",
         "Port",
         "Side",
         "Stop",

src/pybricks/messaging.py

@@ -452,6 +452,7 @@ class AppData:
 
 # Hide type-only names from jedi completions in the module namespace.
 if TYPE_CHECKING:
+    del abstractmethod
     del Callable
     del Iterable
     del MaybeAwaitable