Define the static operations on the interface object

Apparently, we forgot.

Author: Ms2ger

index.bs

@@ -10726,6 +10726,7 @@ the <code>typeof</code> operator will return "function" when applied to an inter
         PropertyDescriptor{\[[Value]]: |proto|, \[[Writable]]: <emu-val>false</emu-val>, \[[Enumerable]]: <emu-val>false</emu-val>, \[[Configurable]]: <emu-val>false</emu-val>}).
     1.  [=Define the constants=] of [=interface=] |I| on |F| given |realm|.
     1.  [=Define the static attributes=] of [=interface=] |I| on |F| given |realm|.
+    1.  [=Define the static operations=] of [=interface=] |I| on |F| given |realm|.
     1.  Return |F|.
 
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