fix build for Xcode 16

[tcaduser]

Fix issues with Xcode 16 build (Issue #936)

Prerequisites:

• remove homebrew from your system PATH as compiling an extension module targeting iOS accidentally catches stuff in compiled modules for homebrew

Compiles all of the components for:

toolchain build kivy

Note that other recipes will probably need adapting.

[AndreMiras]

Awesome, thanks for looking this up.
It looks good to me, but if other could test it that would be awesome.
@eljarro, @psychowasp, @Dekto, @lukieh2014 can you give it a try?

[lukieh2014]

It's working for me, thankyou so much!

[tcaduser]

Hi @AndreMiras, I looked at newer versions of harfbuzz and it should not have the problem, but may have others. Since it is part of the SDL_ttf install, I would think that it may be time to upgrade all of the kivy-ios recipes. Everything I've seen indicates the issues are with newer versions of clang compiler update and not intrinisic to Xcode. To my knowledge, the iOS arm64 builds should not have been embedding bitcode.