chore(repl): hide globals (#10125)

sites/svelte-5-preview/src/lib/Output/Viewer.svelte

@@ -111,14 +111,15 @@
 
 					${styles}
 
+					{
 						const styles = document.querySelectorAll('style[id^=svelte-]');
 
 						let i = styles.length;
 						while (i--) styles[i].parentNode.removeChild(styles[i]);
 
-					if (window.unmount) {
+						if (window.__unmount_previous) {
 							try {
-							window.unmount();
+								window.__unmount_previous();
 							} catch (err) {
 								console.error(err);
 							}
@@ -126,11 +127,14 @@
 
 						document.body.innerHTML = '';
 						window._svelteTransitionManager = null;
+					}
 
-					const { mount, App } = ${$bundle.client?.code};
+					const __repl_exports = ${$bundle.client?.code};
+					{
+						const { mount, App } = __repl_exports;
 						const [, destroy] = mount(App, { target: document.body });
-
+						window.__unmount_previous = destroy;
-					window.unmount = destroy;
+					}
 					//# sourceURL=playground:output
 				`);
 				error = null;