FIX: EEVEE Next Non-shadowing directional light hang

Resolves GPU hang caused by erroneous processing of
directional lights which should not cast shadows.
Resolves GPU hang with the Tree Creature asset and
could possibly resolve #120038.

Authored by Apple: Michael Parkin-White

Co-authored-by: Michael Parkin-White <mparkinwhite@apple.com>
Pull Request: https://projects.blender.org/blender/blender/pulls/120696

source/blender/draw/engines/eevee_next/shaders/eevee_shadow_tilemap_amend_comp.glsl

@@ -32,6 +32,10 @@ void main()
     if (light.type != LIGHT_SUN) {
       break;
     }
+    if (light.tilemap_index == LIGHT_NO_SHADOW) {
+      continue;
+    }
+
     ivec2 base_offset_neg = light_sun_data_get(light).clipmap_base_offset_neg;
     ivec2 base_offset_pos = light_sun_data_get(light).clipmap_base_offset_pos;
     /* LOD relative max with respect to clipmap_lod_min. */

source/blender/draw/engines/eevee_next/shaders/eevee_shadow_tilemap_bounds_comp.glsl

@@ -44,6 +44,10 @@ void main()
   LIGHT_FOREACH_BEGIN_DIRECTIONAL (light_cull_buf, l_idx) {
     LightData light = light_buf[l_idx];
 
+    if (light.tilemap_index == LIGHT_NO_SHADOW) {
+      continue;
+    }
+
     float local_min = FLT_MAX;
     float local_max = -FLT_MAX;
     for (int i = 0; i < 8; i++) {