fix: compute coverage from the profiles the site reads

scripts/generate_site.py

@@ -3587,7 +3587,8 @@ def main():
     for name in sorted(platform_names):
         try:
             cov = compute_coverage(
-                name, args.platforms_dir, db, data_registry, suppl_names
+                name, args.platforms_dir, db, data_registry, suppl_names,
+                emulators_dir=args.emulators_dir,
             )
             coverages[name] = cov
             print(