Display sidebar after user creates a new issue in boards

Concerns graphql-based issue boards (:graphql_board_lists)

In the classic project boards, on creating a new issue, the sidebar is expanded to display the issue's detail. In the graphql-based project boards, this behavior is absent. We are currently skipping the feature spec test for this behavior https://gitlab.com/gitlab-org/gitlab/-/blob/6ae6c752145d87bd1eb4e911eeb9a8c83eb62372/spec/features/boards/new_issue_spec.rb#L82

classic project boards	graphql based project boards
Screen_Recording_2021-03-24_at_10.01.32_AM	Screen_Recording_2021-03-24_at_10.00.41_AM