Enable Design System error-summary validation pattern on tour pages

[kr8n3r]

Enable error-summary Design System validation pattern on tour pages to match the rest of the admin.

Fixes: https://trello.com/c/D5EEpWDV/689-tour-pages-validation-doesnt-have-meet-design-system-requirements

As field's auto focus interferes with the required error-summary autofocus logic was added to only autofucs when there's to form error.

Additionally, this also fixes the bug on one-off-send journey where autofocus should be set, but it isn't working

Before

After