Blender import duplicates textures

[demolke]

Tested versions

• Reproducible with GLTF: Don't give up loading a texture if importing it fails #96778

System information

n/a

Issue description

#96778 introduces fallback mechanism to write textures to the disk if import fails, but this does not work well with blender files.

Specifically the issue is with this line

godot/modules/gltf/gltf_document.cpp

Line 4089 in 77d6283

if (!p_base_path.begins_with("res://.godot/imported")) {

.blend files get converted to .gltf and placed in res://.godot/imported folder, so any external textures referenced are processed relative to that.

Considering a file layout like this

.godot/imported/model.gltf
assets/model.blend
assets/texture.png

The code will try to import res://.godot/imported/../../assets/texture.png, fails on the check and thinks it's placed in .imported folder and falls through to writing copy of the texture to the disk and will import that.

Steps to reproduce

1. open the attached project
2. observe the texture gets duplicated after import finishes

Minimal reproduction project (MRP)

nonembed.zip