Fix position and basis of 3D Scenes instantiated via drag and drop #74

Job	Run time
📊 Static checks / Code style, file formatting, and docs	27s
🍎 macOS / Editor (target=editor, tests=yes)	4m 18s
🍎 macOS / Template (target=template_release)	2m 38s
🐧 Linux / Editor w/ Mono (target=editor)	4m 6s
🌐 Web / Template w/ threads (target=template_release, threads=yes)	4m 4s
🐧 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)	14m 57s
🍏 iOS / Template (target=template_release)	3m 28s
🌐 Web / Template w/o threads (target=template_release, threads=no)	3m 59s
🐧 Linux / Editor with clang sanitizers (target=editor, tests=yes, dev_build=yes, use_asan=yes, use_ubsan=yes, use_llvm=yes, linker=lld)	5m 58s
🐧 Linux / Editor with ThreadSanitizer (target=editor, tests=yes, dev_build=yes, use_tsan=yes, use_llvm=yes, linker=lld)	5m 57s
🐧 Linux / Template w/ Mono (target=template_release)	1m 11s
🏁 Windows / Editor (target=editor, tests=yes)	9m 18s
🤖 Android / Template (target=template_release)	3m 55s
🐧 Linux / Minimal template (target=template_release, everything disabled)	1m 12s
🏁 Windows / Template (target=template_release)	7m 2s
🪲 Godot CPP / Build and test Godot CPP	7m 11s
	1h 19m 41s

Provide feedback