Complementary Shaders r5.0 Release Candidate 4 (Patreon)

I'm hoping this is the last one.

Changes over r5.0 Release Candidate 3:

- Slightly reduced the size of Unbound sun/moon

- Fixed compile error when "Shadow Sample Quality" is set to "Very Low"

- Fixed Lens Flare appearing when looking at sun/moon below the horizon

- Fixed guardians glowing with some resource packs (IntegratedPBR)