Focus terminal view on mouse click in terminal

Before, terminal view focused the parent (pane) instead and, if
terminal's search bar was open and focused, pane transferred the focus
back

crates/terminal_view/src/terminal_element.rs

@@ -400,7 +400,8 @@ impl TerminalElement {
         region = region
             // Start selections
             .on_down(MouseButton::Left, move |event, v: &mut TerminalView, cx| {
-                cx.focus_parent();
+                let terminal_view = cx.handle();
+                cx.focus(&terminal_view);
                 v.context_menu.update(cx, |menu, _cx| menu.delay_cancel());
                 if let Some(conn_handle) = connection.upgrade(cx) {
                     conn_handle.update(cx, |terminal, cx| {