Fix #130235: Eevee: Viewport Render Animation causes white/black flashes of materials

Disable deferred compilation for viewport image renders.

Pull Request: https://projects.blender.org/blender/blender/pulls/130335

source/blender/draw/engines/eevee_next/eevee_material.cc

@@ -168,6 +168,10 @@ MaterialPass MaterialModule::material_pass_get(Object *ob,
                          default_surface_ntree_.nodetree_get(blender_mat);
 
   bool use_deferred_compilation = inst_.is_viewport() || GPU_use_parallel_compilation();
+  if (inst_.is_viewport_image_render()) {
+    /* We can't defer compilation in viewport image render, since we can't re-sync.(See #130235) */
+    use_deferred_compilation = false;
+  }
 
   MaterialPass matpass = MaterialPass();
   matpass.gpumat = inst_.shaders.material_shader_get(