Bug 1443023 - Pass missing $timeout prop to BugListItem (#3302)

The failure classification pin button was broken for bug suggestions
that fell under the "all others" category, since the `BugListItem`
for them weren't passed the `$timeout` prop, unlike for the
"open recent" `BugListItem` instance.

ui/plugins/failure_summary_panel.jsx

@@ -80,6 +80,7 @@ class SuggestionsListItem extends React.Component {
                 escapeHTMLFilter={this.props.escapeHTMLFilter}
                 suggestion={this.props.suggestion}
                 highlightCommonTermsFilter={this.props.highlightCommonTermsFilter}
+                $timeout={this.props.$timeout}
                 bugClassName={bug.resolution !== "" ? "deleted" : ""}
                 title={bug.resolution !== "" ? bug.resolution : ""}
               />))}