### 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)

size_t index;
  std::string name;
};
static void ChannelsInLayer(const EXRHeader &exr_header,
                            const std::string &layer_name,
                            std::vector<LayerChannel> &channels) {
  channels.clear();
  
  for (int c = 0; c < exr_header.num_channels; c++) {
    
    std::string ch_name(exr_header.channels[c].name);
    if (layer_name.empty()) {
      const size_t pos = ch_name.find_last_of('.');
      if (pos != std::string::npos && pos < ch_name.size()) {
        if (pos != 0) continue;
        ch_name = ch_name.substr(pos + 1);
      }
    } else {
      const size_t pos = ch_name.find(layer_name + '.');
      if (pos == std::string::npos) continue;
      if (pos == 0) {
        ch_name = ch_name.substr(layer_name.size() + 1);
      }
    }
    LayerChannel ch(size_t(c), ch_name);
    channels.push_back(ch);
  }
}
}  
int EXRLayers(const char *filename, const char **layer_names[], int *num_layers,