Add support to mask input field numbers

In accordance with the HTML specifications outlined in https://html.spec.whatwg.org/multipage/input.html#number-state-(type%3Dnumber), the sole permissible value attribute for the input type "number" is a valid floating-point number. Additionally, the field configuration encompasses the "step" option, affording users the ability to specify the granularity to which the value must adhere.

Furthermore, the field configuration introduces the "suffix" and "prefix" options, enabling users to impart specific formatting characteristics such as currency symbols or percentages to the field.

It is noteworthy that the imposition of a mask on the input is currently achievable by transitioning the field from type="number" to type="text." However, such a modification may engender unintended side effects on the existing implementation.

I would recommend revising the module guidelines to provide a more comprehensive overview of the capabilities inherent in this module. This adjustment will facilitate a clearer understanding of the available features and their respective implications for users and developers alike.

Thank you!

Tested the new mask option and works well.
Follow the evidence.

Automatically closed - issue fixed for 2 weeks with no activity.

I be created a module, since I really needed that functionality for core number fields
https://www.drupal.org/project/formatted_number_input →