[clang-tools-extra] [include-cleaner] rename enabled flags to `disable-*` (PR #132991)

[Aaron Ballman via cfe-commits]

AaronBallman wrote:

> > LGTM! Do you need me to land the changes on your behalf?
> 
> Yup, I don't have access yet

I'll push the changes once precommit CI goes green. Thank you for the improvement!

https://github.com/llvm/llvm-project/pull/132991