[scripts.pixi] Move qa feature to default environment by default

src/idiap_devtools/scripts/pixi.py

@@ -187,7 +187,9 @@ def pixi(
                 "qa-install": "pre-commit install",
             }
             # this feature can be separated from the rest
-            config.setdefault("environments", {})["qa"] = [feature]
+            config.setdefault("environments", {}).setdefault(
+                "default", []
+            ).insert(0, feature)
             cmds.append(
                 "To install pre-commit hook, run: `pixi run qa-install`"
             )