fix(mask): custom drop special characters on validation

[kryshac]

PR Checklist

Please check if your PR fulfills the following requirements:

• [X] The commit message follows our guidelines: https://github.com/JsDaddy/ngx-mask/blob/develop/CONTRIBUTING.md#commit
• [X] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• [X] Bugfix
• [ ] Feature
• [ ] Code style update (formatting, local variables)
• [X] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] CI related changes
• [ ] Documentation content changes
• [ ] Other... Please describe:

What is the current behavior?

when drop special characters is different from special characters the validation does not always work

example mask: +000 specialCharacters: ['+', ' '] dorpSpecialCharacters: [' '] value: +37

when the validation is done, it checks if dropSpecialCharacters is set, but when removing the characters from the value, it removed those from specialCharacters, and therefore the validation was not correct

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

• [ ] Yes
• [X] No

Other information

[andriikamaldinov1]

@kryshac Thanks for using Ngx-mask and contributing. Please update to latest version, we merged ur pull request