Address review feedback
- docs: order the exporter table the way the examples are ordered.
- exporters: define the cache rule once as `is_cache_class`, so `is_cache_object` and
`register_cache_pytrees_for_model` share it instead of each spelling out the `*Cache`
convention.
- onnx: check `input.size(dim)` in `_patch_chunk` before deriving a chunk size from it.
- openvino: split `export()` into `_fix_exported_program` and `_convert_to_openvino` so it
reads as named stages rather than a run of calls; fold the duplicated port lookup into
`_lookup_by_port` plus a `_port_named` helper; and write the complex RoPE rewrite as
`pairs * cos + rotate(pairs) * sin`, the shape `apply_rotary_pos_emb` has, with a pair-wise
rotation standing in for `rotate_half` since these models interleave rather than split halves.
- fsmt: keep `triu_onnx` importable, now deprecated and delegating to `torch.triu`, which is
what it emulated.
- oneformer: append `spatial_shapes_list` instead of inserting it, so every existing call binds
as it did, and deprecate the `spatial_shapes` kwarg on `get_reference_points` rather than
renaming it outright.
- hunyuan_vl: use `torch_compilable_check` rather than a bare `torch._check`.
- funnel, cache_utils: trim comments down to what isn't already obvious from the code.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
