WebGLRenderer: Fix `PCFSoftShadowMap` check. (#32593)

src/renderers/webgl/WebGLShadowMap.js

@@ -96,10 +96,10 @@ function WebGLShadowMap( renderer, objects, capabilities ) {
 
 		if ( lights.length === 0 ) return;
 
-		if ( lights.type === PCFSoftShadowMap ) {
+		if ( this.type === PCFSoftShadowMap ) {
 
 			warn( 'WebGLShadowMap: PCFSoftShadowMap has been deprecated. Using PCFShadowMap instead.' );
-			lights.type = PCFShadowMap;
+			this.type = PCFShadowMap;
 
 		}