Autocomplete: Clear is not working as expected

[denny99]

Describe the bug

When using the clear option in a single autocomplete, the clear button only clears the input not the actual value.

In multiple mode it clears the value.

This is quite confusing for the user as the autocomplete is obviously empty and therefore when saving anything, the value should be gone.

here is the code:

´´´js
clear() {
if (this.multiple) {
this.value = null;
}
else {
this.inputValue = null;
this.inputEL.nativeElement.value = '';
}
this.updateFilledState();
this.onModelChange(this.value);
this.onClear.emit();
}
```

In multiple mode the input won't be cleared, which is also wrong, as it is a different behaviour compared to the single mode.
And therefore it is incorrect to fire the onClear event, which states that the input was cleared and thats not the case

Environment

Doesn't matter

Reproducer

https://stackblitz.com/edit/github-sx74zq?file=src/app/app.component.ts

Angular version

15.x

PrimeNG version

15.4.1

Build / Runtime

Angular CLI App

Language

TypeScript

Node version (for AoT issues node --version)

16.x

Browser(s)

No response

Steps to reproduce the behavior

1. Visit the reproducer
2. Select a Value in the AC
3. Clear the Value
4. Press the Button. It will still show the previous selected value

Expected behavior

Clear should also clear the value of the ac

[denny99]

Maybe duplicate to #12729