fix: ensure logic blocks keep consitent namespacing

Author: trueadm

.changeset/real-onions-confess.md

@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: ensure logic blocks keep consitent namespacing

packages/svelte/src/compiler/phases/3-transform/utils.js

@@ -347,6 +347,14 @@ export function infer_namespace(namespace, parent, nodes) {
 		}
 	}
 
+	// If the parent block is a control block, we want to keep the namespace if it's not html
+	if (
+		namespace !== 'html' &&
+		(parent.type === 'EachBlock' || parent.type === 'AwaitBlock' || parent.type === 'KeyBlock')
+	) {
+		return namespace;
+	}
+
 	/** @type {Namespace | null} */
 	let new_namespace = null;