Ensure 2D MSAA resolve is performed when 3D content but no 2D content in scene #15811

Job	Run time
📊 Static checks / Code style, file formatting, and docs	31s
🤖 Android / Template (target=template_release)	6m 15s
🌐 Web / Template (target=template_release)	3m 24s
🍏 iOS / Template (target=template_release)	6m 57s
🐧 Linux / Editor w/ Mono (target=editor)	6m 17s
🍎 macOS / Editor (target=editor, tests=yes)	11m 17s
🐧 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)	13m 39s
🍎 macOS / Template (target=template_release)	7m 13s
🐧 Linux / Editor with clang sanitizers (target=editor, tests=yes, dev_build=yes, use_asan=yes, use_ubsan=yes, use_llvm=yes, linker=lld)	8m 13s
🏁 Windows / Editor (target=editor, tests=yes)	10m 40s
🐧 Linux / Editor with ThreadSanitizer (target=editor, tests=yes, dev_build=yes, use_tsan=yes, use_llvm=yes, linker=lld)	7m 53s
🏁 Windows / Template (target=template_release)	8m 33s
🐧 Linux / Template w/ Mono (target=template_release)	4m 3s
🐧 Linux / Minimal template (target=template_release, everything disabled)	4m 37s
🪲 Godot CPP / Build and test Godot CPP	6m 49s
	1h 46m 21s

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