Add wait in cypress to prevent test flakiness

cypress/support/utils.js

@@ -153,6 +153,9 @@ export const assertCodePaneLineCount = (lines) => {
   getCodeEditor().within(() =>
     cy.get('.CodeMirror-line').should('have.length', lines)
   );
+
+  // Wait after check to ensure original focus is restored
+  cy.wait(500); // eslint-disable-line @finsit/cypress/no-unnecessary-waiting
 };
 
 export const assertFramesMatch = (matches) =>