title: User-Defined Value `FLUTTER_BUILD_NAME` & `FLUTTER_BUILD_NUMBER` not inherit from Project Setting
body: <p>Usually, <code>User-Defined</code> Value would inherited from Project setting as <a href="https://stackoverflow.com/questions/36102779/xcode-how-to-have-target-settings-inherit-from-project">xcode-how-to-have-target-settings-inherit-from-project</a>,</p>
  
  <p>But I found that the <code>FLUTTER_BUILD_NAME</code> &amp; <code>FLUTTER_BUILD_NUMBER</code> not the case. Their value in <code>Project</code> &amp; <code>Target</code> are <code>independent</code>.</p>
  
  <p>Is there some config I should change to apply them to be inherited ?</p>