Improve Path3D gizmo usability #12583

Job	Run time
📊 Static checks / Code style, file formatting, and docs	40s
🍎 macOS / Editor (target=editor, tests=yes)	32m 24s
🍎 macOS / Template (target=template_release)	23m 1s
🤖 Android / Template (target=template_release)	48m 15s
🌐 Web / Template (target=template_release)	19m 51s
🐧 Linux / Editor w/ Mono (target=editor)	51m 31s
🍏 iOS / Template (target=template_release)	19m 6s
🐧 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)	54m 58s
🏁 Windows / Editor (target=editor, tests=yes)	1h 28m 19s
🐧 Linux / Editor with clang sanitizers (target=editor, tests=yes, dev_build=yes, use_asan=yes, use_ubsan=yes, use_llvm=yes, linker=lld)	37m 35s
🏁 Windows / Template (target=template_release)	59m 15s
🐧 Linux / Editor with ThreadSanitizer (target=editor, tests=yes, dev_build=yes, use_tsan=yes, use_llvm=yes, linker=lld)	36m 35s
🐧 Linux / Template w/ Mono (target=template_release)	35m 53s
🐧 Linux / Minimal template (target=template_release, everything disabled)	19m 31s
🪲 Godot CPP / Build and test Godot CPP	10m 1s
	8h 56m 55s

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