BlockUI breaks when its mask is styled with an infinite animation

[SupImDos]

Describe the bug

Styling a <BlockUI> component's mask with an infinite animation stops it from ever unblocking. This appears to be because the component waits for the "animationend" event before calling removeMask():

primevue/packages/primevue/src/blockui/BlockUI.vue

Lines 82 to 86 in 9501f36

	if (hasCSSAnimation(this.mask) > 0) {
	this.mask.addEventListener('animationend', () => {
	this.removeMask();
	});
	} else {

It would be nice to be able to style the mask with an infinite animation such as animate-pulse without it breaking the component.

Pull Request Link

No response

Reason for not contributing a PR

• Lack of time
• Unsure how to implement the fix/feature
• Difficulty understanding the codebase
• Other

Other Reason

Unsure if this is valid, and if so what the approach should be to fix it.
Maybe the approach should involve a hasInfiniteCSSAnimation utility that does:

return getComputedStyle(element).getPropertyValue('animation-iteration-count') === 'infinite'

Reproducer

https://stackblitz.com/edit/primevue-4-vite-issue-template-njjbnlqt?file=src%2FApp.vue

Environment

StackBlitz

Vue version

3.4.31

PrimeVue version

4.2.5

Node version

No response

Browser(s)

No response

Steps to reproduce the behavior

1. Click the "Block" button
2. Click the "Unblock" button
3. Observe that the mask is never removed, "unblock" is never emitted, and continuing to click the "Block" button again adds more masks to the DOM

Expected behavior

The mask is removed and "unblock" is emitted