don't restrict diawi upload for iOS release builds (#18016)

This commit removes the restriction of uploading iOS release builds to Diawi

Its helpful to have the status app uploaded to Diawi to test release builds on our iPhones.

The installer is very straightforward and makes life easier when we want to try out release builds.

ci/Jenkinsfile.ios

@@ -77,7 +77,6 @@ pipeline {
           }
         }
         stage('Upload') {
-          when { expression { !utils.isReleaseBuild() } }
           steps { script {
             env.DIAWI_URL = ios.uploadToDiawi()
             env.PKG_URL = env.DIAWI_URL