Add [AllowResizable] to various WebGL APIs

[kenrussell]

Several WebGL APIs including bufferData and texImage2D expose the [AllowShared] extended Web IDL attribute to maintain compatibility with WebAssembly applications. It now appears that the new [AllowResizable] extended attribute must be added to these entry points in order to support Wasm applications which enable resizable heaps. See https://bugs.webkit.org/show_bug.cgi?id=250307 for an example of a customer application which failed because of this omission.