[clang-tools-extra] [clang][include-cleaner]skip stdlib recogntion only when there are defintion with body in main file. (PR #95797)

[kadir çetinkaya via cfe-commits]

https://github.com/kadircet requested changes to this pull request.

hi @HerrCai0907 !

Left some detailed comments in the patch. Due to timezone differences, I highly suspect this will be fixed quickly and we have some extra delays for getting changes into releases (and I am going to be OOO next week).
Hence while you're addressing the issues here I am going to revert the original commit, to make sure include-cleaner doesn't stay with this regression for a longer period.

https://github.com/llvm/llvm-project/pull/95797