Don't use windows legacy terminal support when ctypes is not available

[youknowone]

Type of changes

• Bug fix
• New feature
• Documentation / docstrings
• Tests
• Other

AI?

• AI was used to generate this PR

AI generated PRs may be accepted, but only if @willmcgugan has responded on an issue or discussion.

Checklist

• I've run the latest black with default args on new code.
• I've updated CHANGELOG.md and CONTRIBUTORS.md where appropriate (see note about typos above).
• I've added tests for new code.
• I accept that @willmcgugan may be pedantic in the code review.

Description

Hello, I am a developer of RustPython project. RustPython currently doesn't have ctypes, but trying to support pip.
rich is currently bundled in pip. When pip is trying to use rich on legacy windows terminal, it requires ctypes and raising error.
This patch changes rich not to turn on legacy windows terminal supports when ctypes is not available.

Could you check if this is an acceptable approach for rich? Then I will add a test to prevent regressions.