On LLVM17 we are now getting warnings for the redefinition of system macro from the -U on the command line we use to handle one of our library limitations so turn this warning off until we can stop undefining it.
Pull request: https://github.com/WebKit/WebKit/pull/18032
Committed 268268@main (8c8c1cb79116): <https://commits.webkit.org/268268@main> Reviewed commits have been landed. Closing PR #18032 and removing active labels.