test: make models screenshot cleanup race-safe

Author: EmergentKnowledgeGroup

apps/mission-control/e2e/p5-models-slice.spec.ts

@@ -8,10 +8,11 @@ function activeTeamSection(page: import("./testHarness").Page) {
 }
 
 async function dismissVisibleToasts(page: import("./testHarness").Page) {
-  const dismiss = page.locator(".mc-toast-dismiss");
-  while ((await dismiss.count()) > 0) {
-    await dismiss.first().click();
-  }
+  await page.locator(".mc-toast-dismiss").evaluateAll((buttons) => {
+    for (const button of buttons) {
+      (button as HTMLButtonElement).click();
+    }
+  });
 }
 
 /**