USWDS - Bug: Prefix/suffix does not use disabled input styling #4913

Describe the bug

If an input has a prefix/suffix and the input is disabled, the disabled styling does not apply to the prefix/suffix. Disabled inputs have a light gray background, but the prefix/suffix's have a white background.

Steps to reproduce the bug

1. Create a USWDS input with a prefix, suffix, or both.
2. Add the disabled attribute to the USWDS input.
3. The input will have a light gray background, but the prefix/suffix's will have a white background.

Expected Behavior

When an input is disabled, its styling is also applied to any prefix/suffix's on the input.

Related code

<form class="usa-form">
  <label class="usa-label" for="example-input-suffix">Weight, in pounds</label>
  <div class="usa-input-group usa-input-group--sm">
    <input
      id="example-input-suffix"
      class="usa-input"
      pattern="[0-9]*"
      inputmode="numeric"
      disabled
    />
    <div class="usa-input-suffix" aria-hidden="true">lbs.</div>
  </div>
</form>

Screenshots

System setup

• USWDS version: 3.0.2
• Device: Macbook Pro
• Operating System: OSX 12.4
• Browser and version: Chrome v103

Additional context

No response

Code of Conduct

• I agree to follow this project's Code of Conduct.
• I checked the current issues for duplicate bug reports.