[Bug Report] VNumberInput automatically converts value to positive number

### Environment **Vuetify Version:** **Vue Version:** **OS:** Windows 10 (current) ### Steps to reproduce 1. create vuetify wiht option locale: { locale: 'hr' }, ### Expected Behavior If a negative number is entered, it should be persisted as entered. ### Actual Behavior If a negative number is entered, it is automatically converted to a positive number. If you enter a negative number using the component controls, -1 is the only negative value that can be selected. However, it is also automatically converted to 1. ### Reproduction Link [https://play.vuetifyjs.com/#...](https://play.vuetifyjs.com/#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) ### Images  <!-- generated by vuetify-issue-helper. DO NOT REMOVE -->