fix(ui-text-input): icon in SimpleSelect is vertically centered

[ToMESSKa]

Closes: INSTUI-4226

TEST PLAN:

• copy the following code to the code editor of the documentation:

<SimpleSelect
  defaultValue="option-1"
  renderLabel="Option Icons"
  renderBeforeInput={<IconCommonsLine />}
>
  <SimpleSelect.Option id="opt1" value="option-1">
    Option one
  </SimpleSelect.Option>
</SimpleSelect>

• inspect the parent span of the svg element, and in Developer Tools>Styles, hover the mouse over align-items: center to check if the icon is vertically aligned
• previously the icon wasn't vertically centered

[github-actions]

PR Preview Action v1.4.8
Preview removed because the pull request was closed.
2024-10-02 11:38 UTC