Use isaaclab.utils.configclass.configclass in FrameView test

Mirrors the same fix applied to the contact sensor cfg/test; develop's
isaaclab.utils no longer re-exports configclass as a callable, so the
test's @configclass decorator needs the explicit module import.

Author: AntoineRichard

source/isaaclab_ovphysx/test/sim/test_views_xform_prim_ovphysx.py

@@ -76,7 +76,7 @@ def test_view_raises_before_physics_ready():
 
 from isaaclab.assets import RigidObjectCfg  # noqa: E402
 from isaaclab.scene import InteractiveScene, InteractiveSceneCfg  # noqa: E402
-from isaaclab.utils import configclass  # noqa: E402
+from isaaclab.utils.configclass import configclass  # noqa: E402
 
 
 @configclass