### 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)

tinyexr::SetErrorMessage("File size is zero : " + std::string(filename),
                             err);
    return TINYEXR_ERROR_INVALID_FILE;
  }
  const char *head = reinterpret_cast<const char *>(file.data);
  const char *marker = reinterpret_cast<const char *>(file.data);
  
  {
    const char header[] = {0x76, 0x2f, 0x31, 0x01};
    if (memcmp(marker, header, 4) != 0) {
      tinyexr::SetErrorMessage("Invalid magic number", err);
      return TINYEXR_ERROR_INVALID_MAGIC_NUMBER;
    }
    marker += 4;
  }
  
  {
    
    
    if (marker[0] != 2 || marker[1] != 8 || marker[2] != 0 || marker[3] != 0) {
      tinyexr::SetErrorMessage("Unsupported version or scanline", err);
      return TINYEXR_ERROR_UNSUPPORTED_FORMAT;
    }
    marker += 4;
  }
  int dx = -1;
  int dy = -1;
  int dw = -1;
  int dh = -1;
  int num_scanline_blocks = 1;