### 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)

FP16 o = {0};
  
  if (f.s.Exponent == 0)  
    o.s.Exponent = 0;
  else if (f.s.Exponent == 255)  
  {
    o.s.Exponent = 31;
    o.s.Mantissa = f.s.Mantissa ? 0x200 : 0;  
  } else                                      
  {
    
    int newexp = f.s.Exponent - 127 + 15;
    if (newexp >= 31)  
      o.s.Exponent = 31;
    else if (newexp <= 0)  
    {
      if ((14 - newexp) <= 24)  
      {
        unsigned int mant = f.s.Mantissa | 0x800000;  
        o.s.Mantissa = mant >> (14 - newexp);
        if ((mant >> (13 - newexp)) & 1)  
          o.u++;  
      }
    } else {