The Metal and Vulkan backend checks if the vertex shader uses
`gl_PointSize` in order to set the correct parameters for point
rendering. The `eevee_deferred_tile_compact` shader uses point
rendering, but is only used as dummy geometry. The vertex
shader ignored the incoming input data, but didn't set the
`gl_PointSize` which generated incorrect shader pipelines.
It was detected on Vulkan, but Metal uses a similar workaround.
Pull Request: https://projects.blender.org/blender/blender/pulls/116463
45582662a1