[input dropdown] Extraneous padding in dropdown when input has left icon

[mat128]

Bug Report

Since 2.9.0, there is extraneous padding to the left of the dropdown label.
This seems to have been introduced in PR #2183

Steps to reproduce

Use the right action left icon example from the documentation:

<div class="ui right action left icon input">
  <i class="[search icon](https://fomantic-ui.com/elements/icon.html)"></i>
  <input type="text" placeholder="Search">
  <div class="[ui basic floating dropdown button](https://fomantic-ui.com/elements/button.html)">
    <div class="text">This Page</div>
    <i class="[dropdown icon](https://fomantic-ui.com/elements/icon.html)"></i>
    <div class="menu">
      <div class="item">This Organization</div>
      <div class="item">Entire Site</div>
    </div>
  </div>
</div>

Expected result

Padding similar to screenshot from the 2.8 release using archive.org.

Actual result

Extraneous padding, see screenshot.

Screenshot (if possible)

Version

2.9.0

[lubber-de]

Fixed by #2567