Add static framework verification override in swift podfile (#14667)

packages/flutter_tools/templates/cocoapods/Podfile-swift

@@ -46,6 +46,11 @@ target 'Runner' do
   }
 end
 
+pre_install do |installer|
+  # workaround for https://github.com/CocoaPods/CocoaPods/issues/3289
+  Pod::Installer::Xcode::TargetValidator.send(:define_method, :verify_no_static_framework_transitive_dependencies) {}
+end
+
 post_install do |installer|
   installer.pods_project.targets.each do |target|
     target.build_configurations.each do |config|