dispatch: when --pager=no is passed, also disable pager on req.repo.ui With a future chg change, `req.repo` could be set and currently it is unaffected by `--pager=on`. This patch makes it so. This could make one of the test cases in `test-pager.t` pass with future chg changes. Differential Revision: https://phab.mercurial-scm.org/D990