Dropdown Array Key Selection skipping last entry.

[denny99]

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Plunkr Case (Bug Reports)
Just go to the show case
https://www.primefaces.org/primeng/showcase/#/dropdown
and try to select paris with arrow key down in the basic example

Current behavior
Selecting the last item in the dropdown per arrow key is not possible

The bug is located here:

primeng/src/app/components/dropdown/dropdown.ts

Line 810 in 3231ea9

for (let i = (index + 1); i < (this.optionsToDisplay.length - 1); i++) {

When searching for the next element the last in the array is skipped. for whatever reason

Expected behavior
Selecting the last item is possible

• Angular version: 12.x

• PrimeNG version: 12.x

• Browser: [all]