[lld] [LLD, MachO] Default objc_relative_method_lists on MacOS11+/iOS14+ (PR #101360)

[via llvm-commits]

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@@ -2,15 +2,15 @@
 # UNSUPPORTED: target=arm{{.*}}-unknown-linux-gnueabihf
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alx32 wrote:

> our lit config defaults to MacOS 11 now

Why change lit configs - why not manually overwrite on the command line ? Like [here](https://github.com/llvm/llvm-project/blob/38ef6929a3322fdddd74b3d6abdf6936cc4d8e62/lld/test/MachO/invalid/incompatible-arch.s#L19).

https://github.com/llvm/llvm-project/pull/101360