### Godot version

v4.1.dev.custom_build [2e273f0e35800f2bcc7c05db54100caa97928f69]

### System information

Windows 11 x64, Vulkan (Forward+), NVIDIA GeForce GTX 1650

### Issue description

Importing EXR files from baking lightmaps will always fail. But the files aren't corrupted and can be opened in other software like Krita.

### Steps to reproduce

Do these in the MRP

1. Find `lm` node in the scene `000.tscn`, And press `Bake Lightmaps`
2. After finished baking, The lightmaps should be rendering normally and several error messages will be printed out. They say :
- Invalid/Corrupted data found when decoding pixels.
- Error loading image: res://000.exr
- Error importing 'res://000.exr'.

3. When trying to reopen `000.tscn`, The lightmaps won't render in the scene anymore.

( Optional )

4. If trying to put the lightmap data `000.lmbake` into the `lm` node. It will spam these out :
- Uniforms were never supplied for set (1) at the time of drawing, which are required by the pipeline
- Texture (binding: 7) is an array of (8) textures, so it should be provided equal number of texture IDs to satisfy it (IDs provided: 7).

Then all the meshes go black immediately.

### Minimal reproduction project

[i_5222a99f5_001.zip](https://github.com/godotengine/godot/files/11629095/i_5222a99f5_001.zip)

p += 4;
    tinyexr::swap4(&info.pixel_type);
    tinyexr::swap4(&info.x_sampling);
    tinyexr::swap4(&info.y_sampling);
    channels.push_back(info);
  }
  return true;
}
static void WriteChannelInfo(std::vector<unsigned char> &data,
                             const std::vector<ChannelInfo> &channels) {
  size_t sz = 0;
  
  for (size_t c = 0; c < channels.size(); c++) {
    sz += channels[c].name.length() + 1;  
    sz += 16;                                    
  }
  data.resize(sz + 1);
  unsigned char *p = &data.at(0);
  for (size_t c = 0; c < channels.size(); c++) {
    memcpy(p, channels[c].name.c_str(), channels[c].name.length());
    p += channels[c].name.length();
    (*p) = '\0';
    p++;
    int pixel_type = channels[c].requested_pixel_type;
    int x_sampling = channels[c].x_sampling;
    int y_sampling = channels[c].y_sampling;
    tinyexr::swap4(&pixel_type);
    tinyexr::swap4(&x_sampling);
    tinyexr::swap4(&y_sampling);
    memcpy(p, &pixel_type, sizeof(int));