Make tabs e2e test more reliable and do not fail on 29th of February (#39301)

e2e/test/scenarios/dashboard/tabs.cy.spec.js

@@ -490,7 +490,7 @@ describe("scenarios > dashboard > tabs", () => {
 
     filterWidget().contains("Relative Date").click();
     popover().within(() => {
-      cy.findByText("Today").click();
+      cy.findByText("Past 7 days").click();
     });
 
     // Loader in the 2nd tab
@@ -561,7 +561,13 @@ describe("scenarios > dashboard > tabs", () => {
     });
 
     // Ensure the tab name has reverted to the long name after the drag has completed
-    cy.findByRole("button", { name: longName });
+    cy.findByRole("button", { name: longName })
+      .should("be.visible")
+      .should($el => {
+        // ensure animation has finished
+        const minTextWidth = 300;
+        expect($el[0].getBoundingClientRect().width).greaterThan(minTextWidth);
+      });
 
     saveDashboard();