### 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)

}
  if (num_parts > 1) {
    
    memory.push_back(0);
  }
  tinyexr_uint64 chunk_offset = memory.size() + size_t(total_chunk_count) * sizeof(tinyexr_uint64);
  tinyexr_uint64 total_size = 0;
  std::vector< std::vector< std::vector<unsigned char> > > data_lists(num_parts);
  for (unsigned int i = 0; i < num_parts; ++i) {
    std::string e;
    int ret = EncodeChunk(&exr_images[i], exr_headers[i],
                          channels[i],
                          chunk_count[i],
                          
                          chunk_offset,
                          num_parts > 1,
                          offset_data[i], 
                          data_lists[i], 
                          total_size, 
                          &e);
    if (ret != TINYEXR_SUCCESS) {
      if (!e.empty()) {
        tinyexr::SetErrorMessage(e, err);
      }
      return 0;
    }
    chunk_offset = total_size;
  }
  
  if (total_size == 0) {