LibWeb: Don't iterate over text content inside replaced elements

This fixes an issue where whitespace inside embedded <svg> elements
would create unexpected whitespace text content on the page.

When combined with something like `white-space: pre-wrap`, it ended
up generating a lot of surprising vertical offsets.

Userland/Libraries/LibWeb/Layout/InlineLevelIterator.cpp

@@ -68,7 +68,7 @@ void InlineLevelIterator::exit_node_with_box_model_metrics()
 // This is similar to Layout::Node::next_in_pre_order() but will not descend into inline-block nodes.
 Layout::Node const* InlineLevelIterator::next_inline_node_in_pre_order(Layout::Node const& current, Layout::Node const* stay_within)
 {
-    if (current.first_child() && current.first_child()->is_inline() && !current.is_inline_block()) {
+    if (current.first_child() && current.first_child()->is_inline() && !current.is_inline_block() && !current.is_replaced_box()) {
         if (!current.is_box() || !static_cast<Box const&>(current).is_out_of_flow(m_inline_formatting_context))
             return current.first_child();
     }