skip work in runes mode

packages/svelte/src/compiler/phases/2-analyze/visitors/EachBlock.js

@@ -39,20 +39,19 @@ export function EachBlock(node, context) {
 	if (node.key) context.visit(node.key);
 	if (node.fallback) context.visit(node.fallback);
 
-	let mutated = false;
+	if (!context.state.analysis.runes) {
+		let mutated =
+			!!node.context &&
+			extract_identifiers(node.context).some((id) => {
+				const binding = context.state.scope.get(id.name);
+				return !!binding?.mutated;
+			});
 
 		// collect transitive dependencies...
 		for (const binding of node.metadata.expression.dependencies) {
 			collect_transitive_dependencies(binding, node.metadata.transitive_deps);
 		}
 
-	if (node.context) {
-		for (const id of extract_identifiers(node.context)) {
-			const binding = context.state.scope.get(id.name);
-			if (binding?.mutated) mutated = true;
-		}
-	}
-
 		// ...and ensure they are marked as state, so they can be turned
 		// into mutable sources and invalidated
 		if (mutated) {
@@ -67,6 +66,7 @@ export function EachBlock(node, context) {
 				}
 			}
 		}
+	}
 
 	mark_subtree_dynamic(context.path);
 }