[Bug] Image resources in mdx cannot be processed when img is wrapped by div

[Timeless0911]

related: web-infra-dev/rspress#1146

mdx-rs/crates/plugin_normalize_link/src/lib.rs

Lines 189 to 193 in 18ad02b

	hast::Node::MdxJsxElement(element) => {
	if let Some(name) = &element.name {
	if name != "img" {
	return links;
	}

The above code only checks the hast node for img tag at the first level, so if we wrapped by div, it will directly return and do not add import for this resources.