multiselect applies disabled UI state to all items when selectionLimit is reached and chip is removed

[CarlosBustos1]

[x] bug report => Search github for a similar issue or PR before submitting
[ ] feature request => Please check if request is not on the roadmap already https://github.com/primefaces/primeng/wiki/Roadmap
[ ] support request => Please do not submit support request here, instead see http://forum.primefaces.org/viewforum.php?f=35

(https://stackblitz.com/edit/primeng-multiselect-demo-diortg)

**Current behavior**
When selectionLimit is used and the limit is reached, if I remove a chip, the items remains with disabled state

**Expected behavior**
The items must be enabled when selectionLimit is not reached

**Minimal reproduction of the problem with instructions**
[](https://stackblitz.com/edit/primeng-multiselect-demo-diortg)

1. Reach the selectionLimit of the multiselect
2. Remove a value from the multiselected clicking a chip
3. The items still disabled even though the limit was not reached.


* **Angular version:** 12.0.0

* **PrimeNG version:** 12.0.5

* **Browser:** [all]
 
* **Language:** [all]