Text input of type number should forbid invalid characters and allow decimal values

[laogao]

Describe the bug
Currently a text input of type number would allow characters such as a (the captured value would then become null), and at the same time double values such as 1.2 would fail the validation (with the follwing error message: {some number: {number: true}}).

To Reproduce
SurveyJs json

{
    "title": "number input issue",
    "logoPosition": "right",
    "pages": [
        {
            "name": "page1",
            "elements": [
                {
                    "type": "text",
                    "name": "some number",
                    "title": "some number",
                    "isRequired": true,
                    "inputType": "number"
                }
            ]
        }
    ],
    "showQuestionNumbers": "off"
}

SurveyJs answer

{}

Expected behavior
A text field of type number should restrict the keyboard to allow only digits and (0 or 1) decimal point(s). And decimal values (such as 1.2) shouldn't fail the number validator. This is also how the web version behaves.

Desktop (please complete the following information):

• OS: macOS
• Browser: Chrome