[WebXR] Enable required extensions for simulator builds

https://bugs.webkit.org/show_bug.cgi?id=258836
rdar://111710240

Reviewed by Kimmo Kinnunen.

There are two code paths to create a WebGL context for use by WebXR. The first
is at creation time and the second upgrades an exiting WebGL context for WebXR.

The second path was not requesting all the required extensions in simulator
builds. This change makes both paths request the same extensions on all builds
for Cocoa platforms.

* Source/WebCore/html/canvas/WebGLRenderingContextBase.cpp:
(WebCore::WebGLRenderingContextBase::makeXRCompatible):

Canonical link: https://commits.webkit.org/265766@main

Source/WebCore/html/canvas/WebGLRenderingContextBase.cpp

@@ -3278,7 +3278,7 @@ void WebGLRenderingContextBase::makeXRCompatible(MakeXRCompatiblePromise&& promi
         // FIXME: add a way to verify that we're using a compatible graphics adapter.
         m_isXRCompatible = true;
 
-#if PLATFORM(COCOA) && !PLATFORM(IOS_FAMILY_SIMULATOR)
+#if PLATFORM(COCOA)
         // FIXME: This is ugly. It's something needed at the GraphicsContextGL
         // level, not WebGLRenderingContext. We should move this down to a
         // virtual makeXRCompatible or something on GCGL.