Move ci_build_targets to the build section of the BuildKite presubmit. BuildKite runs tests with --build_tests_only, which means that the ci_build_targets were not being built at all.
Move ci_build_targets to the build section of the BuildKite presubmit. BuildKite runs tests with --build_tests_only, which means that the ci_build_targets were not being built at all.

RELNOTES: None
PiperOrigin-RevId: 221314625

bazelbuild/rules_apple,bazelbuild/rules_apple,bazelbuild/rules_apple,bazelbuild/rules_apple