fix: add `LabeledStatement` to `instance.ast` check

packages/svelte/src/compiler/phases/2-analyze/index.js

@@ -441,7 +441,8 @@ export function analyze_component(root, source, options) {
 			!module.scope.references.keys().some((name) => ['$$props', '$$restProps'].includes(name)) &&
 			!instance.ast.body.some(
 				(node) =>
-					node.type === 'ExportNamedDeclaration' &&
+					node.type === 'LabeledStatement' ||
+					(node.type === 'ExportNamedDeclaration' &&
 						((node.declaration &&
 							node.declaration.type === 'VariableDeclaration' &&
 							node.declaration.kind === 'let') ||
@@ -449,7 +450,7 @@ export function analyze_component(root, source, options) {
 								(specifier) =>
 									specifier.local.type === 'Identifier' &&
 									instance.scope.get(specifier.local.name)?.declaration_kind === 'let'
-						))
+							)))
 			),
 		tracing: false,
 		classes: new Map(),