[macOS] Fix MoltenVK SDK detection after file location changes in 1.3… #566

Job	Run time
📊 Static checks / Code style, file formatting, and docs	2m 17s
🍎 macOS / Editor (target=editor, tests=yes)	27m 8s
🍎 macOS / Template (target=template_release)	26m 56s
🤖 Android / Template (target=template_release)	24m 28s
🍏 iOS / Template (target=template_release)	32m 26s
🐧 Linux / Editor w/ Mono (target=editor)	35m 14s
🌐 Web / Template (target=template_release)	15m 56s
🐧 Linux / Editor with doubles and GCC sanitizers (target=editor, tests=yes, dev_build=yes, precision=double, use_asan=yes, use_ubsan=yes, linker=gold)	47m 13s
🏁 Windows / Editor (target=editor, tests=yes)	43m 58s
🐧 Linux / Editor with clang sanitizers (target=editor, tests=yes, dev_build=yes, use_asan=yes, use_ubsan=yes, use_llvm=yes, linker=lld)	27m 42s
🏁 Windows / Template (target=template_release)	27m 34s
🐧 Linux / Template w/ Mono (target=template_release)	22m 33s
🐧 Linux / Minimal template (target=template_release, everything disabled)	13m 31s
🪲 Godot CPP / Build and test Godot CPP	5m 55s
	5h 52m 51s

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