PMREMGenerator: Fix replacing render targets with different heights (#25301)

src/extras/PMREMGenerator.js

@@ -261,7 +261,7 @@ class PMREMGenerator {
 
 		const cubeUVRenderTarget = _createRenderTarget( width, height, params );
 
-		if ( this._pingPongRenderTarget === null || this._pingPongRenderTarget.width !== width ) {
+		if ( this._pingPongRenderTarget === null || this._pingPongRenderTarget.width !== width || this._pingPongRenderTarget.height !== height ) {
 
 			if ( this._pingPongRenderTarget !== null ) {