Fix New Room List arrow key management

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

src/components/structures/LeftPanel.tsx

@@ -52,7 +52,7 @@ interface IState {
 // List of CSS classes which should be included in keyboard navigation within the room list
 const cssClasses = [
     "mx_RoomSearch_input",
-    "mx_RoomSearch_icon", // minimized <RoomSearch />
+    "mx_RoomSearch_minimizedHandle", // minimized <RoomSearch />
     "mx_RoomSublist_headerText",
     "mx_RoomTile",
     "mx_RoomSublist_showNButton",

src/components/structures/RoomSearch.tsx

@@ -165,7 +165,7 @@ export default class RoomSearch extends React.PureComponent<IProps, IState> {
             icon = (
                 <AccessibleButton
                     title={_t("Search rooms")}
-                    className="mx_RoomSearch_icon"
+                    className="mx_RoomSearch_icon mx_RoomSearch_minimizedHandle"
                     onClick={this.openSearch}
                 />
             );