feat: Fabric-accelerated get/set_local_poses via indexedfabricarray

- get_local_poses / set_local_poses via indexed fabric kernels
- get_scales / set_scales with full Fabric acceleration
- Per-view dirty tracking with automatic re-propagation
- Topology-change recovery via _rebuild_fabric_arrays
- Multi-GPU tests (cuda:1)

Depends on: isaac-sim#5675 (indexed fabric kernels)

Author: pv-nvidia

source/isaaclab_physx/changelog.d/fabric-local-poses.rst

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+Added
+^^^^^
+
+* Added Fabric-accelerated ``get_local_poses`` / ``set_local_poses`` to
+  :class:`~isaaclab_physx.sim.views.FabricFrameView`.
+
+  Local-pose operations now use ``wp.indexedfabricarray`` to read/write
+  ``omni:fabric:localMatrix`` directly on the GPU, propagating between
+  parent world matrices and child local/world matrices via Warp kernels
+  without round-tripping through USD.
+
+* Added per-view dirty tracking: ``set_local_poses`` marks the world matrix
+  dirty and vice-versa, triggering automatic re-propagation on the next read.
+
+* Added ``_rebuild_fabric_arrays`` topology-change recovery.