Blender Git Loki

EEVEE: Screen Space Reflection: Improve self intersection cases.

This patch fix most self intersection comming from reflection rays.
We regenerate the ray if it goes below the shading normal (should be the
geometric normal but we have no access to it here).

Also add the same precision based bias we use for contact shadows.

This fix T81105 Eevee SSR quality regression in 2.91 alpha