new tab when open playLevelView in LadderView (#6479)
new tab when open playLevelView in LadderView (#6479)

Co-authored-by: smallst_wsl <6c42689ff77371401bf43b7d56b93ac1ca3e92d3@163.com>
codecombat/codecombat,javatlacati/codecombat,javatlacati/codecombat,javatlacati/codecombat,codecombat/codecombat,javatlacati/codecombat,codecombat/codecombat,codecombat/codecombat,codecombat/codecombat,javatlacati/codecombat