Update cypress tests for different button casing

packages/builder/cypress/support/commands.js

@@ -247,7 +247,7 @@ Cypress.Commands.add("createScreen", (screenName, route) => {
   cy.get("[aria-label=AddCircle]").click()
   cy.get(".spectrum-Modal").within(() => {
     cy.get(".item").contains("Blank").click()
-    cy.get(".spectrum-Button").contains("Add Screens").click({ force: true })
+    cy.get(".spectrum-Button").contains("Add screens").click({ force: true })
     cy.wait(500)
   })
   cy.get(".spectrum-Dialog-grid").within(() => {
@@ -265,7 +265,7 @@ Cypress.Commands.add("createAutogeneratedScreens", screenNames => {
   for (let i = 0; i < screenNames.length; i++) {
     cy.get(".item").contains(screenNames[i]).click()
   }
-  cy.get(".spectrum-Button").contains("Add Screens").click({ force: true })
+  cy.get(".spectrum-Button").contains("Add screens").click({ force: true })
   cy.wait(4000)
 })