Different behavior when deleting the first figure of a number that is a multiple of 1000 and one that it's not

[nhack]

🐞 bug report

Is this a regression?

No

Description

There is a different behavior when deleting the first figure of a number that is a multiple of 1000 and one that it's not in case all the remaining figures are 0.
Example

1,000,000 - delete first figure (1) -> 000,000
100,000 - delete first figure (1) -> 0

I would expect that the behavior is the same in both cases and the behavior should be the first one (multiple of 1000) - the zeros stay and you can quickly change from 100,000 to 200,000.

I think that the issue can be solved by patching the _toNumber method:

    private _toNumber(value: string | number | undefined | null) {
        if (!this.isNumberValue || value === MaskExpression.EMPTY_STRING) {
            return value;
        } 

        //TODO <- if value contains only zeros: return value;

        if (
            this.maskExpression.startsWith(MaskExpression.SEPARATOR) &&
            (this.leadZero || !this.dropSpecialCharacters)
        ) {
            return value;
        }

        // rest of the code
    }

🔬 Minimal Reproduction

Can be reproduced easily on the demo page, section Separators: https://jsdaddy.github.io/ngx-mask/#1

🔥 Exception or Error

None

🌍 Your Environment

Angular Version: 17.3.12

Angular CLI: 17.3.8
Node: 20.19.3
Package Manager: npm 10.8.2
OS: darwin arm64

Angular: 17.3.12
... animations, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, router

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1703.8
@angular-devkit/build-angular   17.3.8
@angular-devkit/core            17.3.8
@angular-devkit/schematics      17.3.8
@angular/cdk                    17.3.10
@angular/cli                    17.3.8
@schematics/angular             17.3.8
ng-packagr                      17.3.0
rxjs                            7.8.1
typescript                      5.4.5
zone.js                         0.14.8

Anything else relevant?

No