BlockUI: rapid blocking-unblocking leads to TypeError this.mask is null

[VsevolodGolovanov]

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

Codesandbox Case (Bug Reports)
https://codesandbox.io/s/primereact-blockui-rapid-blocking-unblocking-leads-to-typeerror-this-mask-is-null-d46he

Current behavior
Blocking and unblock rapidly leads to TypeError this.mask is null (Firefox) or TypeError Cannot read properties of null (reading 'addEventListener') (Chrome) in blockui's unblock function.

Expected behavior
No error.

Minimal reproduction of the problem with instructions
Open showcase, click "Block-unblock" button, see error.
This can also be reproduced manually in the BlockUI showcase by rapidly clicking the Block and Unblock buttons repeatedly.

Please tell us about your environment:

• React version:

• PrimeReact version:
  6.5.0, 7.0.0

• 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 ]
  Firefox, Chrome

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

[VsevolodGolovanov]

I suspect this hinges on animation duration and can be worked around by disabling it.
With 6.5.0 if i style blockui transitionDuration: "0s" then the error goes away, but nothing on the page reacts to clicks after unblocking. The invisible blockui div remains and covers everything.
With 7.0.0 transitionDuration: "0s" has no effect. If i do animation: "none" then it blocks without animation, but never unblocks.
How can I properly disable animation?
I suspect the code is written in such a way that it breaks with zero animation.

[melloware]

PR submitted.