Bug 1726123 - Part 5: Add missing "js/" includes outside of SM. r=arai

In preparation for the next part, add missing includes to "js/" public headers.

Differential Revision: https://phabricator.services.mozilla.com/D122843

dom/script/ScriptLoadRequest.cpp

@@ -12,6 +12,8 @@
 #include "mozilla/Unused.h"
 #include "mozilla/Utf8.h"  // mozilla::Utf8Unit
 
+#include "js/OffThreadScriptCompilation.h"
+
 #include "ModuleLoadRequest.h"
 #include "nsContentUtils.h"
 #include "nsICacheInfoChannel.h"