DataTable checked all rows does not honor ShowSelectionElement

[sdt-jchau]

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

Codesandbox Case (Bug Reports)
https://codesandbox.io/s/bold-fast-gdhs7

Current behavior
When using ShowSelectionElement to disable checkbox selection per row, the Select All toggle selects all rows regardless of ShowSelectionElement function

Expected behavior
Select All only select rows where there's a checkbox element for selection

Minimal reproduction of the problem with instructions
https://codesandbox.io/s/bold-fast-gdhs7

1. Click Select All checkbox at header of grid
2. All rows are selected but only the rows where there's a checkbox should be selected

Please tell us about your environment:
Windows 10

• React version:
  Latest

• PrimeReact version:
  v6.5

• 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, Edge

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