### Godot version

v4.0.beta.custom_build [705273140]

### System information

windows 10

### Issue description

When double-clicking a gltf file in the project, the Importer panel will open, but it will also extract the embedded textures.
This never happened in the previous version I was using (I'm not sure which beta I was using last- maybe 13 or 14).



### Steps to reproduce

open the project, and double-click the gltf file to open the importer, see that it creates an image file when it should stay embedded.


### Minimal reproduction project

[gltf import bug.zip](https://github.com/godotengine/godot/files/10522127/gltf.import.bug.zip)

if (p_state->lights.is_empty()) {
		return OK;
	}
	Array lights;
	for (GLTFLightIndex i = 0; i < p_state->lights.size(); i++) {
		lights.push_back(p_state->lights[i]->to_dictionary());
	}
	Dictionary extensions;
	if (p_state->json.has("extensions")) {
		extensions = p_state->json["extensions"];
	} else {
		p_state->json["extensions"] = extensions;
	}
	Dictionary lights_punctual;
	extensions["KHR_lights_punctual"] = lights_punctual;
	lights_punctual["lights"] = lights;
	print_verbose("glTF: Total lights: " + itos(p_state->lights.size()));
	return OK;
}
Error GLTFDocument::_serialize_cameras(Ref<GLTFState> p_state) {