Don't use destructuring with addRaw()

This benefits from the identifier clash checking that's in addRaw.

Author: TimothyGu

lib/constructs/interface.js

@@ -492,7 +492,8 @@ class Interface {
   }
 
   generateRequires() {
-    this.requires.addRaw(`{ implSymbol, ctorRegistrySymbol }`, "utils");
+    this.requires.addRaw("implSymbol", "utils.implSymbol");
+    this.requires.addRaw("ctorRegistrySymbol", "utils.ctorRegistrySymbol");
 
     if (this.idl.inheritance !== null) {
       this.requires.addRelative(this.idl.inheritance);