Trigger search by clicking on magnifying glass icon in string list and machinery

[bugzilla-to-github]

This issue was created automatically by a script.

Bug 1685821

Bug Reporter: @mathjazz CC: [email protected]

Since bug 1659491 has been fixed, we've heard reports from users they were expecting search to trigger after clicking on the magnifying glass icon. Additionally, Google Search also shares this behavior on the search results page.

Let's make the icon a button that triggers search when clicked.