devops: fix WebKit build on MacOS 12 (#13907)
devops: fix WebKit build on MacOS 12 (#13907)

WebKit build creates an empty folder `./Tools/Playwright/Playwright.xcodeproj/project.xcworkspace/xcshareddata/swiftpm`

To workaround this, let's remove the embedder folder when
preparing browser checkout.
microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright