`std::set` not working in Windows PyROOT

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Description

During https://github.com/root-project/root/pull/14669 a new test was added which tests std::set in PyROOT. This exposed an issue where creating a set in PyROOT on the windows builds fails.

A conditional windows test skip was added in bindings/pyroot/pythonizations/test/CMakeLists.txt to fix this (where the stl_set.py is added).

Whenever this issue is resolved this test skip should also be removed.

• [ ] Remove windows test skip for stl_set.py.

Reproducer

s = ROOT.std.set['int']() (in windows).

ROOT version

6.31/01 (dev)

Installation method

Build from source

Operating system

Windows

Additional context

No response