fix: add possibility to use own handling of onerror which will not en…

…d up in the exception

src/embed-images.ts

@@ -55,7 +55,18 @@ async function embedImageNode<T extends HTMLElement | SVGImageElement>(
   const dataURL = await resourceToDataURL(url, getMimeType(url), options)
   await new Promise((resolve, reject) => {
     clonedNode.onload = resolve
-    clonedNode.onerror = reject
+    clonedNode.onerror = async (...params) => {
+      if (clonedNode.onerror) {
+        try {
+          const result = await clonedNode.onerror(...params)
+          resolve(result)
+        } catch (error) {
+          reject(error)
+        }
+      } else {
+        reject(new Error('Image failed to load'))
+      }
+    }
 
     const image = clonedNode as HTMLImageElement
     if (image.decode) {