Feature or enhancement

Internsys.getfilesystemencoding() output.

Pitch

fsencoding string may be cached and reused.

(Aftersys._enablelegacywindowslegacyfsencoding() is removed, we can cache fsencoding object.)

Linked PRs

• gh-106182: sys: Intern getfilesystemencoding() and getfilesystemencodeerrors() #106183