Adjust positional arguments flagged by flake8-bugbear

The new release of flake8-bugbear is starting to flag positional argument unpacking that comes after keyword arguments in function calls as a style warning that fails.  This is a good thing to catch because it can lead to unexpected side effects with function arguments and/or errors thrown by Python.

See the following links for more details:

- https://stackoverflow.com/questions/58961715/python-value-unpacking-order-in-method-parameters
- https://github.com/python/cpython/issues/82741

This changeset fixes a couple of instances where the positional argument unpacking was happening after keyword arguments were being provided.

Signed-off-by: Carlo Costino <carlo.costino@gsa.gov>

app/main/forms.py

@@ -956,9 +956,9 @@ class OnOffField(GovukRadiosField):
         ]
         super().__init__(
             label,
+            *args,
             choices=choices,
             thing=f"{choices[0][1].lower()} or {choices[1][1].lower()}",
-            *args,
             **kwargs,
         )