Add fix for TAA passes rendering black meshes on XR

(cherry picked from commit b44f1c5176b16238ff2560680818b5413584c9bd)

servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp

@@ -546,6 +546,8 @@ void RenderForwardClustered::_render_list(RenderingDevice::DrawListID p_draw_lis
 				VALID_FLAG_COMBINATION(COLOR_PASS_FLAG_MULTIVIEW);
 				VALID_FLAG_COMBINATION(COLOR_PASS_FLAG_MULTIVIEW | COLOR_PASS_FLAG_MOTION_VECTORS);
 				VALID_FLAG_COMBINATION(COLOR_PASS_FLAG_MOTION_VECTORS);
+				VALID_FLAG_COMBINATION(COLOR_PASS_FLAG_SEPARATE_SPECULAR | COLOR_PASS_FLAG_MULTIVIEW | COLOR_PASS_FLAG_MOTION_VECTORS);
+				VALID_FLAG_COMBINATION(COLOR_PASS_FLAG_TRANSPARENT | COLOR_PASS_FLAG_MULTIVIEW | COLOR_PASS_FLAG_MOTION_VECTORS);
 				default: {
 					ERR_FAIL_MSG("Invalid color pass flag combination " + itos(p_params->color_pass_flags));
 				}