fix(PLT-4375): retry welcome button click in mobile widget e2e

The form's ok-button exists before its handlers are attached, so a single
click could be lost and the fullscreen close button never appeared. Retry
the forced click until the close button is visible.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

Author: mfrederic

packages/embed/e2e/cypress-utils.ts

@@ -31,3 +31,19 @@ export const openOnMobile = (url: string) => {
     },
   })
 }
+
+// Clicks the form's welcome screen button until the widget goes fullscreen (close button visible).
+// The button exists before the form's handlers are attached, so a single click can be lost; and it
+// can be scrolled out of the iframe viewport, hence `force`.
+export const startWidgetOnMobile = (attempts = 5) => {
+  cy.get('iframe').then(($iframe) => {
+    const $body = $iframe.contents().find('body')
+    cy.wrap($body).find('[data-qa="ok-button"]').click({ force: true })
+  })
+  cy.wait(1000)
+  cy.get('.tf-v1-widget-close').then(($close) => {
+    if (!$close.is(':visible') && attempts > 1) {
+      startWidgetOnMobile(attempts - 1)
+    }
+  })
+}

packages/embed/e2e/spec/functional/widget-newui.cy.ts

@@ -1,4 +1,4 @@
-import { openOnMobile } from '../../cypress-utils'
+import { openOnMobile, startWidgetOnMobile } from '../../cypress-utils'
 
 describe('Widget', () => {
   testWidget('/widget-newui-html.html', 'html')
@@ -53,11 +53,8 @@ function testMobile(path: string, title: string) {
     })
 
     it('should reset the form when closing it', () => {
-      cy.get('iframe').then(($iframe) => {
-        const $body = $iframe.contents().find('body')
-        cy.wrap($body).find('[data-qa="ok-button"]').click({ force: true })
-        cy.get('.tf-v1-widget-close').click()
-      })
+      startWidgetOnMobile()
+      cy.get('.tf-v1-widget-close').should('be.visible').click()
       cy.wait(1000)
       cy.get('iframe').then(($iframe) => {
         const $body = $iframe.contents().find('body')

packages/embed/e2e/spec/functional/widget.cy.ts

@@ -1,4 +1,4 @@
-import { openOnMobile } from '../../cypress-utils'
+import { openOnMobile, startWidgetOnMobile } from '../../cypress-utils'
 
 describe('Widget', () => {
   testWidget('/widget-html.html', 'html')
@@ -53,11 +53,8 @@ function testMobile(path: string, title: string) {
     })
 
     it('should reset the form when closing it', () => {
-      cy.get('iframe').then(($iframe) => {
-        const $body = $iframe.contents().find('body')
-        cy.wrap($body).find('[data-qa="ok-button"]').click()
-        cy.get('.tf-v1-widget-close').click()
-      })
+      startWidgetOnMobile()
+      cy.get('.tf-v1-widget-close').should('be.visible').click()
       cy.wait(1000)
       cy.get('iframe').then(($iframe) => {
         const $body = $iframe.contents().find('body')