Fix comment on GPUTexture.textureBindingViewDimension

Author: kainino0x

dist/index.d.ts

@@ -3307,7 +3307,10 @@ interface GPUTexture
    * no such restriction.
    *
    * @todo Temporarily optional until all browsers have implemented it.
-   * Check support before using. (Use the non-null assertion operator `!` where needed.)
+   * It is safe to access on any browser, as it will just (correctly) return
+   * `undefined` if not implemented.
+   * Note `undefined` is always a valid value, even in browsers that implement
+   * this (so be careful if using the non-null assertion operator `!` on this).
    */
   readonly textureBindingViewDimension?:
     | GPUTextureViewDimension