cmd/link: new darwin linker warning on -pagezero_size and -no_pie deprecation [1.18 backport]

[gopherbot]

@cherrymui requested issue #55112 to be considered for backport to the next 1.18 minor release.

@gopherbot please backport this to previous releases. Thanks.

[gopherbot]

Change https://go.dev/cl/431516 mentions this issue: [release-branch.go1.18] cmd/link: stop passing -pagezero_size to darwin linker

[gopherbot]

Change https://go.dev/cl/431518 mentions this issue: [release-branch.go1.18] cmd/link: suppress -no_pie deprecation warning on darwin

[gopherbot]

Closed by merging c8e1cf4 to release-branch.go1.18.