HDR Cubemaps Do Not Reduce File Size When Packaged Using ASTC Format

Currently HDR Cubemap textures aren't getting compressed when packaging for Android(ASTC). You can compare the file size of a packaged project before and after adding cubemap textures to verify this.

1. Open a blank project
2. Show engine content and search for Desert_Outer_HDR
3. Duplicate and place in content folder
4. Save All and package for Android (ASTC)
5. Once the packaging is complete take note of the file size (in my case it was 107MB)
6. Duplicate the HDR Cubemap in your content browser (note the file size for this asset is 16.8MB)
7. Package once again for Android (ASTC) and look at the file size

RESULT
The project's file size is increased by 18MB

EXPECTED
The texture is compressed and has a smaller memory footprint therefore the total memory size shouldn't exceed 122MB