Render: Ambient Occlusion should not affect unlit surfaces

## Description

Ambient Occlusion should affect unlit surfaces

## Prerequisites

N/A

## Steps to Reproduce

Create Unlit material and check viewport

### Expected behavior:

Unlit material should stay clean

### Actual behavior:

Unlit material accepts Ambient Occlusion

### Reproducibility:

Constantly

## Versions

2022.1

## Additional Information

N/A