[Bug preprocessor/95889] __has_include evaluated even if disabled (with cpp in traditional-mode)

[t...@dev-zero.ch]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95889

--- Comment #3 from Tiziano Müller <t...@dev-zero.ch> ---
Created attachment 48941
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48941&action=edit
fix __has_include with traditional-cpp

as posted on the gcc-patches ml