Importing glTF with nested structure gives "inconsistent owner" warning

[stevenctl]

Tested versions

• Reproducible in 4.3-dev3
• Not reproducible in 4.2 stable

System information

Linux 6.1 - Godot 4.3-dev3 - OpenGL Compat backend

Issue description

When importing a gLTF file with some nested hierarchy, each child of the scenes root (and nested children) emit the following warning:

  scene/main/node.cpp:1432 - Adding 'Rope' as child to 'Mast' will make owner 'pirateship' inconsistent. Consider unsetting the owner beforehand.
  scene/main/node.cpp:1432 - Adding 'Sail' as child to 'Mast' will make owner 'pirateship' inconsistent. Consider unsetting the owner beforehand.
  scene/main/node.cpp:1432 - Adding 'RearFlag' as child to 'RearFlagPole' will make owner 'pirateship' inconsistent. Consider unsetting the owner beforehand.
  scene/main/node.cpp:1432 - Adding 'Door' as child to 'Ship' will make owner 'pirateship' inconsistent. Consider unsetting the owner beforehand.
  scene/main/node.cpp:1432 - Adding 'Mast' as child to 'Ship' will make owner 'pirateship' inconsistent. Consider unsetting the owner beforehand.
  scene/main/node.cpp:1432 - Adding 'RearFlagPole' as child to 'Ship' will make owner 'pirateship' inconsistent. Consider unsetting the owner beforehand.
  scene/main/node.cpp:1432 - Adding 'Wheel' as child to 'Ship' will make owner 'pirateship' inconsistent. Consider unsetting the owner beforehand.

This doesn't seem to cause any real issues and ownership ends up being fine.

Steps to reproduce

Simply import the glb. You don't need to instance it in a scene or do anything else.

Minimal reproduction project (MRP)

repro.zip

[Rindbee]

Related to #78997, which did not take into account the case where the sub-scene root node was replaced_by.

[akien-mga]

CC @Sauermann

[dandeliondino]

I'm getting the same error when importing .blend files in 4.2.2 RC1. Error does not occur on 4.2.1-stable with the same files.