fix(core): createdBundledHighlighter cause wasm engine to be loaded (#819)

Author: fuma-nama

packages/core/src/constructors/bundle-factory.ts

@@ -120,7 +120,7 @@ export function createdBundledHighlighter<BundledLangs extends string, BundledTh
       .map(i => resolveLang(i as BundledLangs))
 
     const core = await createHighlighterCore({
-      engine: engine(),
+      engine: options.engine ?? engine(),
       ...options,
       themes: _themes,
       langs,