WebGPU: Fix updating compressed textures (#17448)

See
https://forum.babylonjs.com/t/compressed-textures-array-doesnt-work-with-webgpu/61410.

Author: Popov72

packages/dev/core/src/Engines/WebGPU/webgpuTextureManager.ts

@@ -1235,7 +1235,7 @@ export class WebGPUTextureManager {
                         buffer: buffer,
                         offset: 0,
                         bytesPerRow,
-                        rowsPerImage: height,
+                        rowsPerImage: textureExtent.height / blockInformation.height,
                     },
                     textureCopyView,
                     textureExtent
@@ -1251,7 +1251,7 @@ export class WebGPUTextureManager {
                     {
                         offset: 0,
                         bytesPerRow,
-                        rowsPerImage: height,
+                        rowsPerImage: textureExtent.height / blockInformation.height,
                     },
                     textureExtent
                 );