Apply some low-hanging fruit optimizations to Vulkan RD #16717

Job	Run time
📊 Static checks / Code style, file formatting, and docs	32s
🤖 Android / Template (target=template_release)	27m 30s
🍎 macOS / Editor (target=editor, tests=yes)	30m 18s
🍎 macOS / Template (target=template_release)	27m 25s
🍏 iOS / Template (target=template_release)	27m 12s
🐧 Linux / Editor w/ Mono (target=editor)	33m 32s
🌐 Web / Template (target=template_release)	18m 10s
🐧 Linux / Editor with doubles and GCC sanitizers (target=editor, tests=yes, dev_build=yes, scu_build=yes, precision=double, use_asan=yes, use_ubsan=yes, linker=gold)	35m 12s
🏁 Windows / Editor (target=editor, tests=yes)	40m 31s
🐧 Linux / Editor with clang sanitizers (target=editor, tests=yes, dev_build=yes, use_asan=yes, use_ubsan=yes, use_llvm=yes, linker=lld)	28m 59s
🏁 Windows / Template (target=template_release)	29m 17s
🐧 Linux / Editor with ThreadSanitizer (target=editor, tests=yes, dev_build=yes, use_tsan=yes, use_llvm=yes, linker=lld)	26m 27s
🐧 Linux / Template w/ Mono (target=template_release)	21m 59s
🐧 Linux / Minimal template (target=template_release, everything disabled)	14m 10s
🪲 Godot CPP / Build and test Godot CPP	6m 46s
	6h 8m 0s

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