### 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)

std::vector<tinyexr::tinyexr_uint64> *offsets, size_t n,
    const unsigned char *head, const unsigned char *marker, const size_t size) {
  assert(head < marker);
  assert(offsets->size() == n);
  for (size_t i = 0; i < n; i++) {
    size_t offset = static_cast<size_t>(marker - head);
    
    if ((offset + sizeof(tinyexr::tinyexr_uint64)) >= size) {
      return false;
    }
    int y;
    unsigned int data_len;
    memcpy(&y, marker, sizeof(int));
    memcpy(&data_len, marker + 4, sizeof(unsigned int));
    if (data_len >= size) {
      return false;
    }
    tinyexr::swap4(&y);
    tinyexr::swap4(&data_len);
    (*offsets)[i] = offset;
    marker += data_len + 8;  
  }
  return true;
}
static int FloorLog2(unsigned x) {