### 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 (ret != TINYEXR_SUCCESS) {
        if (!e.empty() && err) {
          (*err) += e;
        }
        return ret;
      }
      for (size_t j = 0; j < static_cast<size_t>(num_y_tiles); ++j)
        for (size_t i = 0; i < static_cast<size_t>(num_x_tiles); ++i) {
          offset_data.offsets[level_index][j][i] = offset;
          swap8(reinterpret_cast<tinyexr_uint64*>(&offset_data.offsets[level_index][j][i]));
          offset += data_list[block_idx].size() + doffset;
          
          ++block_idx;
        }
      level_image = level_image->next_level;
    }
    assert(static_cast<int>(block_idx) == num_blocks);
    total_size = offset;
  } else { 
    std::vector<tinyexr::tinyexr_uint64>& offsets = offset_data.offsets[0][0];
#if TINYEXR_HAS_CXX11 && (TINYEXR_USE_THREAD > 0)
    std::atomic<bool> invalid_data(false);
    std::vector<std::thread> workers;
    std::atomic<int> block_count(0);
    int num_threads = std::min(std::max(1, int(std::thread::hardware_concurrency())), num_blocks);
    for (int t = 0; t < num_threads; t++) {
      workers.emplace_back(std::thread([&]() {
        int i = 0;
        while ((i = block_count++) < num_blocks) {
#else