fix(slider): disabled Slider should not submit a form

[SuperioOne]

PR contains small changes for slider to improve it's behavior on form submit.

1. Removed redundant input which causes double value submit and submit once when input is disabled.

Form data before:

{
  "FormData": [
    {
      "name": "basicSlider",
      "value": "27"
    },
    {
      "name": "basicSlider", // Data submitted twice here
      "value": "27"
    },
    {
      "name": "disableSlider", // It shouldn't submit disabled input with the form
      "value": "30"
    }
  ]
}

Form data after:

{
  "FormData": [
    {
      "name": "basicSlider",
      "value": "27"
    }
  ]
}

Tested with both hideTextInput true and false.

2. Removed extra styling since it always sets input type to hidden when hideTextInput is true.

[metonym]

Nice find, thanks for getting to the bottom of this.

[metonym]

Fixed in v0.76.1