### 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)

int idxR = -1;
  int idxG = -1;
  int idxB = -1;
  int idxA = -1;
  std::vector<std::string> layer_names;
  tinyexr::GetLayers(exr_header, layer_names);
  std::vector<tinyexr::LayerChannel> channels;
  tinyexr::ChannelsInLayer(
      exr_header, layername == NULL ? "" : std::string(layername), channels);
  if (channels.size() < 1) {
    if (layername == NULL) {
      tinyexr::SetErrorMessage("Layer Not Found. Seems EXR contains channels with layer(e.g. `diffuse.R`). if you are using LoadEXR(), please try LoadEXRWithLayer(). LoadEXR() cannot load EXR having channels with layer.", err);
    } else {
      tinyexr::SetErrorMessage("Layer Not Found", err);
    }
    FreeEXRHeader(&exr_header);
    FreeEXRImage(&exr_image);
    return TINYEXR_ERROR_LAYER_NOT_FOUND;
  }
  size_t ch_count = channels.size() < 4 ? channels.size() : 4;
  for (size_t c = 0; c < ch_count; c++) {
    const tinyexr::LayerChannel &ch = channels[c];
    if (ch.name == "R") {
      idxR = int(ch.index);
    } else if (ch.name == "G") {
      idxG = int(ch.index);
    } else if (ch.name == "B") {
      idxB = int(ch.index);
    } else if (ch.name == "A") {