p-inputnumber doesn't initialize its value correctly

[realpascuu]

Describe the bug

Input number doesn't initialize its value correctly.

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

No response

Reproducer

https://stackblitz.com/edit/github-bnbvqvg7?file=src%2Fapp%2Fapp.component.ts

Environment

SO: Ubuntu 24.02.1
Locale: es-ES

Angular version

19.0.5

PrimeNG version

v19

Node version

22.12.0

Browser(s)

Chrome 131

Steps to reproduce the behavior

1. Initialize component with a decimal value.
2. The input displays the value without decimal.

Example: if you initializes with 23.3, the input displays 233

Expected behavior

• Display the correct decimal value.
• Possibility of write decimal values with minFractionDigits = 0.

[imaksp]

Looks like some locale specific bug.

[halilyldzs]

The same happens when the locale is tr-TR. 120.45 is 12,045.00.

[UrosBgd]

I can also confirm this bug appears for 'sr' locale, but it's working fine for default one. I suspect it doesn't work for locales using (,) as decimal separator instead of (.), which is actually the most of the Europe.

Steps to reproduce

• Open the first example from InputNumber docs (https://primeng.org/inputnumber) in Stackblitz.
• Import 'sr' locale in main.ts file import '@angular/common/locales/global/sr';
• Provide 'sr' locale in main.ts file { provide: LOCALE_ID, useValue: 'sr' }
• Update third control html, set locale="sr"
• Update value3 to 10.1
• Expected value 10,10, actual value 101,00

I can confirm this worked in v17, since I noticed it because of the failing unit test after migrating to v19.