TreeSelect missing Tree option propagateSelectionDown and propagateSelectionUp

[easyping]

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Current behavior
In the new TreeSelect component, the two options propagateSelectionDown and propagateSelectionUp from the tree are missing, so that not all subitems are selected / deselected.

Please tell us about your environment:
OpenSuse 15.3, Intellj, npm, express

• Angular version: 5.X
  12.2

• PrimeNG version: 5.X
  12.1.0-rc.1

• Browser: [all | Chrome XX | Firefox XX | IE XX | Safari XX | Mobile Chrome XX | Android X.X Web Browser | iOS XX Safari | iOS XX UIWebView | iOS XX WKWebView ]
  all

• Language: [all | TypeScript X.X | ES6/7 | ES5]
  all

• Node (for AoT issues): node --version = 16.6.2