fix: Add generate wrapper change

[baominghelly]

Summary

• Fix scripts/generate_wrappers.py to prefer parsed base-header type spellings when libclang reports ambiguous or degraded parameter types.
• Preserve generated signatures for vector-like parameters, including std::vector<Tensor>, std::vector<int64_t> and std::optional<std::vector<int64_t>>.
• Normalize explicit Call / Make template instantiations and deduplicate repeated instantiation entries.
• Add regression coverage in tests/test_generate_wrappers.py for the Histogram overload case where libclang can misreport reused parameter names as int.

Motivation

The wrapper generator could produce invalid C++ when libclang degraded some operator parameter types. In particular, Histogram overload generation could emit an incorrect template signature such as Tensor, Tensor, int, ... instead of preserving the base-header signature with int64_t and optional vector types.

The same issue also affected generated explicit instantiations for tensor-list style parameters, where types could be normalized incorrectly, leading to compile errors in generated wrapper code.

Type of Change

• fix — bug fix
• test — adding or fixing tests only

Platforms Affected

• PyTorch C++ bindings (WITH_TORCH)
• Python bindings / user-facing API
• Build system / CMake / CI

Smoke Test Result

build and install passed.

unit test passed.

Test Results on Supported Platforms

Platform	Affected	Build / Smoke Result	Full Result / Notes
NVIDIA	Yes	Build passed locally on A100 with WITH_NVIDIA / WITH_TORCH	tests/test_generate_wrappers.py: 11 passed
Iluvatar	No	N/A - not affected	N/A
MetaX	No	N/A - not affected	N/A
Cambricon	No	N/A - not affected	N/A
Moore	No	N/A - not affected	N/A
Ascend	No	N/A - not affected	N/A

Benchmark / Performance Impact

N/A. This only changes wrapper code generation and regression tests.

Notes for Reviewers

This change is intentionally scoped to wrapper generation. The main invariant is that generated wrapper signatures should match the operator base headers when parameter names uniquely identify the overload, instead of relying only on libclang's reported type spelling.