InputTextArea, FloatLabel and Initial State

[lazyeye73]

I'm submitting a ...

[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

Current behavior
If an InputTextarea is wrapped in a FloatLabel and the InputTextarea has an initial value, the FloatLabel appears within the bounds of the rendered textarea control instead of floating above where it should be.

Expected behavior
The FloatLabel should appear above the rendered textarea control if there is an initial value set in the InputTextarea, but the "p-filled" class is not being added to the InputTextarea.

Minimal reproduction of the problem with instructions
https://github-v5s7kb.stackblitz.io

• Angular version: 10.2.3+

• PrimeNG version: 10.0.3+

• Browser: all

• Language: TypeScript 4.0.5

Code Fix
This can be fixed by adding the following code to the component (which is similar to how the InputText component works):

    ngDoCheck() {
        this.updateFilledState();
    }