Fix the setting for 'x86_build' and maybe 'uefi_build' on the 'windows-build-bios.wf.json'

Hi,

I am trying to build windows 10 32bit image, but I am facing multiple issues.
Among them, there is one which seems obvious to me.

My understanding is that to build windows 10 x86 image, the following setting in `https://github.com/GoogleCloudPlatform/compute-image-tools/blob/master/daisy_workflows/image_build/windows/windows-build-bios.wf.json` shall change from:
```
"uefi_build": {
"Value": "true",
"Description": "Is this a UEFI build"
},
"x86_build": {
"Value": "false",
"Description": "A build of a Windows 32-bit OS"
},
```
to
```
"uefi_build": {
"Value": "false",
"Description": "Is this a UEFI build"
},
"x86_build": {
"Value": "true",
"Description": "A build of a Windows 32-bit OS"
},
```

Please verify and let me know if this can be fixed.

Thanks
Reza

Start by reviewing daisy_workflows/image_build/windows/windows-build-bios.wf.json and the x86_build and uefi_build settings. Verify which defaults are required for a Windows 10 32-bit image and confirm the BIOS/UEFI behavior before changing them. Done means the workflow uses the correct defaults for the intended x86 build.

Written by the indexing model from the issue text.