Fix for fullscreen button in default html/shell

[Revilo0509]

Please include the following in your bug report:

Version of emscripten/emsdk:
emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 4.0.14 (96371ed)
clang version 22.0.0git (https:/github.com/llvm/llvm-project 1cc84bcc08f723a6ba9d845c3fed1777547f45f9)
Target: wasm32-unknown-emscripten
Thread model: posix
InstalledDir: /root/emsdk/upstream/bin

JS Console Error
Aborted('requestFullscreen' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the Emscripten FAQ))
overrideMethod @ hook.js:608
emscript.js:704 Uncaught RuntimeError: Aborted('requestFullscreen' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the Emscripten FAQ))
at abort (emscript.js:699:11)
at Object.get (emscript.js:556:9)
at HTMLInputElement.onclick (emscript.html:115:132)
hook.js:608 user callback triggered after runtime exited or application aborted. Ignoring.

Fix
I have found out that changing:

<input type="button" value="Fullscreen" onclick="Module.requestFullscreen(document.getElementById('pointerLock').checked, 
                                                                                document.getElementById('resize').checked)">

To

<input type="button" value="Fullscreen" onclick="Module.canvas.requestFullscreen(document.getElementById('pointerLock').checked, 
                                                                                document.getElementById('resize').checked)">

fixes atleast my issue.
OBS: I am not to experienced, and it may just be a user error. Anyway feels like something that should be reported. :P