cuda.core: re-sort example imports after OpaqueArray rename (pre-commit)

ruff I001 (isort): OpaqueArray sorts after FilterMode where CUDAArray used to
sit, so the `from cuda.core.texture import (...)` blocks in gl_interop_fluid.py
and texture_sample.py needed reordering.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: rparolin

cuda_core/examples/gl_interop_fluid.py

@@ -110,8 +110,8 @@
 from cuda.core.texture import (
     AddressMode,
     ArrayFormat,
-    OpaqueArray,
     FilterMode,
+    OpaqueArray,
     ReadMode,
     ResourceDescriptor,
     SurfaceObject,

cuda_core/examples/texture_sample.py

@@ -32,8 +32,8 @@
 from cuda.core.texture import (
     AddressMode,
     ArrayFormat,
-    OpaqueArray,
     FilterMode,
+    OpaqueArray,
     ReadMode,
     ResourceDescriptor,
     TextureDescriptor,