LibWeb: Implement WebGL extension OES_standard_derivatives

Author: https://github.com/cqundefine
Commit: d4ac9fc5c6
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/6711
Reviewed-by: https://github.com/awesomekling

Libraries/LibWeb/WebGL/WebGL2RenderingContext.cpp

@@ -252,6 +252,11 @@ bool WebGL2RenderingContext::angle_instanced_arrays_extension_enabled() const
     return false;
 }
 
+bool WebGL2RenderingContext::oes_standard_derivatives_extension_enabled() const
+{
+    return false;
+}
+
 ReadonlySpan<WebIDL::UnsignedLong> WebGL2RenderingContext::enabled_compressed_texture_formats() const
 {
     return m_enabled_compressed_texture_formats;