session/test_env_select: Reformat from tox -e fix

I find this makes the tests significantly less readable, so I'm commiting
this separately so we can decide what to do about it. The options are:

1. Squash this with the previous, just using the auto-enforced formatting.
2. Leave these commits as-is, so we at least can go back to the more
   readable original formatting.
3. Do whatever needs to be done to keep the auto-reformatter from touching
   that particular bit of code.

I have a preference for 3, but won't argue any other decision.

tests/session/test_env_select.py

@@ -20,25 +20,26 @@
 
 
 @pytest.mark.parametrize(
-    ("userinput",       "envnames",             "isall",    "isdefault" ), [
-    (None,              (),                     False,      True        ),
-    ("",                (),                     False,      True        ),
-    ("a1",              ("a1",),                False,      False       ),
-    ("a1,b2,c3",        ("a1", "b2", "c3"),     False,      False       ),
-    #   If the user gives "ALL" as any envname, this becomes an "is_all" and other envnames are ignored.
-    ("ALL",             (),                     True,       False       ),
-    ("a1,ALL,b2",       (),                     True,       False       ),
-    #   Zero-length envnames are ignored as being not present. This is not intentional.
-    (",,a1,,,b2,,",     ("a1", "b2"),           False,      False       ),
-    (",,",              (),                     False,      True        ),
-    #   Environment names with "invalid" characters are accepted here; the client is expected to deal with this.
-    ("\x01.-@\x02,xxx", ("\x01.-@\x02", "xxx"), False,      False       ),
+    ("userinput", "envnames", "isall", "isdefault"),
+    [
+        (None, (), False, True),
+        ("", (), False, True),
+        ("a1", ("a1",), False, False),
+        ("a1,b2,c3", ("a1", "b2", "c3"), False, False),
+        #   If the user gives "ALL" as any envname, this becomes an "is_all" and other envnames are ignored.
+        ("ALL", (), True, False),
+        ("a1,ALL,b2", (), True, False),
+        #   Zero-length envnames are ignored as being not present. This is not intentional.
+        (",,a1,,,b2,,", ("a1", "b2"), False, False),
+        (",,", (), False, True),
+        #   Environment names with "invalid" characters are accepted here; the client is expected to deal with this.
+        ("\x01.-@\x02,xxx", ("\x01.-@\x02", "xxx"), False, False),
     ],
 )
 def test_clienv(userinput: str, envnames: tuple[str], isall: bool, isdefault: bool) -> None:
     c = CliEnv(userinput)
-    assert (c.is_all, c.is_default_list, tuple(c)) \
-        == (isall,    isdefault,         tuple(envnames))
+    assert (c.is_all, c.is_default_list, tuple(c)) == (isall, isdefault, tuple(envnames))
+
 
 @pytest.mark.parametrize(
     ("userinput", "expected"),