TreeSelect templateHeader doesn't work

[GregorGabric]

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I'm submitting a ... (check one with "x")

[x] bug report
[ ] feature request
[ ] support request => Please do not submit support request here, instead see https://forum.primefaces.org/viewforum.php?f=57

**Here is the codesandbox
https://codesandbox.io/s/stupefied-bush-ulnpy?file=/src/demo/TreeSelectDemo.tsx

Current behavior
cannot make a custom Header component, either it's broken or im doing someting wrong.

Expected behavior
The prop templateHeader should work

Minimal reproduction of the problem with instructions

https://codesandbox.io/s/stupefied-bush-ulnpy?file=/src/demo/TreeSelectDemo.tsx

Please tell us about your environment:

MacOs

• React version:

"react": "17.0.2",

• PrimeReact version:

"primereact": "7.2.0",

• 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 ]

Chrome 98

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

[GregorGabric]

Clearing with pressing on the x icon also isn't working. It only closes the panel

[melloware]

Looks like a bug. PR submitted: #2642

[GregorGabric]

Thank you

[GregorGabric]

When can the next release be expected if you don't mind

[melloware]

i don't work for PrimeTek so i have no idea hopefully they agree with my PR and accept it.