LibWeb: Add the ability to retrieve a WebGL context from getContext

Author: https://github.com/Lubrsi
Commit: 58f882200c
Pull-request: https://github.com/SerenityOS/serenity/pull/14184
Reviewed-by: https://github.com/Quaker762 ✅
Reviewed-by: https://github.com/gmta ✅
Reviewed-by: https://github.com/linusg ✅
Reviewed-by: https://github.com/sunverwerth

Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLGenerators.cpp

@@ -48,6 +48,10 @@ static bool is_wrappable_type(Type const& type)
         return true;
     if (type.name == "AbortSignal")
         return true;
+    if (type.name == "CanvasRenderingContext2D")
+        return true;
+    if (type.name == "WebGLRenderingContext")
+        return true;
     return false;
 }