Multiple leading zeros for negative numbers

[chernodub]

Hey everyone, thought I should share that with you guys, and maybe we could find a solution to this.

🐞 bug report

Is this a regression?

Not sure

Description

When using allowNegativeNumbers, it is allowed to enter multiple leading zeros, while it isn't working like that without the allowNegativeNumbers attribute. This behavior is inconsistent.

🔬 Minimal Reproduction

https://stackblitz.com/edit/angular-ivy-yzwbzo?file=src/app/app.component.html

🌍 Your Environment

Angular version: 12.1 ngx-mask version: 12.0

    "@angular/animations": "^12.1.0",
    "@angular/common": "^12.1.0",
    "@angular/compiler": "^12.1.0",
    "@angular/core": "^12.1.0",
    "@angular/forms": "^12.1.0",
    "@angular/platform-browser": "^12.1.0",
    "@angular/platform-browser-dynamic": "^12.1.0",
    "@angular/router": "^12.1.0",
    "ngx-mask": "^12.0.0",
    "rxjs": "^7.1.0",
    "tslib": "^2.3.0",
    "zone.js": "^0.11.4"