### Godot version

0810ecaafdbee3ea747219e6ab3a8de5d2216a09

### System information

Windows 11, Nvidia 3000, firefox

### Issue description

Exporting the gltf file is corrupt in blender.

### Steps to reproduce

1. Open project.
2. Export as glb
3. Open in blender
4. Blender display many warnings

![image](https://user-images.githubusercontent.com/32321/216740742-de662c5c-f5c3-44b5-a36e-8ad33defdbba.png)


### Minimal reproduction project

https://cdn.discordapp.com/attachments/598003845657788438/1071249610896580691/Test_Game_Project.zip


ERR_FAIL_COND_V(!p_values.size(), T());
	if (p_times.size() != (p_values.size() / (p_interp == GLTFAnimation::INTERP_CUBIC_SPLINE ? 3 : 1))) {
		ERR_PRINT_ONCE("The interpolated values are not corresponding to its times.");
		return p_values[0];
	}
	
	int idx = -1;
	for (int i = 0; i < p_times.size(); i++) {
		if (p_times[i] > p_time) {
			break;
		}
		idx++;
	}
	SceneFormatImporterGLTFInterpolate<T> interp;
	switch (p_interp) {
		case GLTFAnimation::INTERP_LINEAR: {
			if (idx == -1) {
				return p_values[0];
			} else if (idx >= p_times.size() - 1) {
				return p_values[p_times.size() - 1];
			}
			const float c = (p_time - p_times[idx]) / (p_times[idx + 1] - p_times[idx]);
			return interp.lerp(p_values[idx], p_values[idx + 1], c);
		} break;
		case GLTFAnimation::INTERP_STEP: {
			if (idx == -1) {
				return p_values[0];
			} else if (idx >= p_times.size() - 1) {