Fix hydration for static text nodes at the root of the template (#2184)

* Fix hydration for static text nodes at the root of the template

* fix clippy

packages/ssr/src/cache.rs

@@ -156,11 +156,20 @@ impl StringCache {
                 cur_path.pop();
             }
             TemplateNode::Text { text } => {
+                // write the id if we are prerendering and this is a root node that may need to be removed in the future
+                if prerender && is_root {
+                    write!(chain, "<!--node-id")?;
+                    chain.segments.push(Segment::RootNodeMarker);
+                    write!(chain, "-->")?;
+                }
                 write!(
                     chain,
                     "{}",
                     askama_escape::escape(text, askama_escape::Html)
                 )?;
+                if prerender && is_root {
+                    write!(chain, "<!--#-->")?;
+                }
             }
             TemplateNode::Dynamic { id: idx } | TemplateNode::DynamicText { id: idx } => {
                 chain.segments.push(Segment::Node(*idx))