fix(Playwright): switchTo resolves nested iframes relative to current frame

lib/helper/Playwright.js

@@ -3667,8 +3667,7 @@ class Playwright extends Helper {
     }
 
     try {
-      // Always create frame locator from page to avoid nested frame paths
-      this.frame = await Promise.race([this.page.frameLocator(locator), new Promise((_, reject) => setTimeout(() => reject(new Error('Frame locator timeout')), 5000))])
+      this.frame = this.frame ? this.frame.frameLocator(locator) : this.page.frameLocator(locator)
     } catch (e) {
       console.warn('Warning during frame locator creation:', e.message)
       throw new Error(`Frame ${JSON.stringify(locator)} could not be accessed`)

test/helper/webapi.js

@@ -1963,6 +1963,38 @@ export function tests() {
     })
   })
 
+  describe('#switchTo', () => {
+    beforeEach(function () {
+      if (isHelper('CDPBrowser')) this.skip() // switchTo/iframes are not implemented in CDPBrowser
+    })
+
+    it('should switch to nested iframes one by one', async () => {
+      await I.amOnPage('/iframe_nested')
+      await I.switchTo('[name=wrapper]')
+      await I.see('Iframe test')
+      await I.switchTo('[name=content]')
+      await I.see('Information')
+      await I.see('Lots of valuable data here')
+    })
+
+    it('should return to the top level context from a nested iframe', async () => {
+      await I.amOnPage('/iframe_nested')
+      await I.switchTo('[name=wrapper]')
+      await I.switchTo('[name=content]')
+      await I.see('Information')
+      await I.switchTo(null)
+      await I.see('Nested Iframe test')
+    })
+
+    it('should not find a nested iframe from the top level context', async () => {
+      await I.amOnPage('/iframe_nested')
+      await I.switchTo('[name=content]').then(
+        () => assert.fail('switched to an iframe which is not in the current context'),
+        err => assert.include(err.message, 'was not found'),
+      )
+    })
+  })
+
   describe('scroll: #scrollTo, #scrollPageToTop, #scrollPageToBottom', () => {
     beforeEach(function () {
       if (I.capabilities?.layout === 'none') this.skip() // scrolling requires a real layout engine