fix(ui2): no paging in dialog below expanded cmdline #38489

Problem:  When entering the cmdline below expanded messages, those
          messages are moved to the dialog window. The dialog window
          supports paging but that is unexpected in this situation where
          it just serves to keep (some of, exactly those that were
          visible before the cmdline was entered) the messages visible.
          Wrong highlight group for dialog "more" message.
Solution: Don't create the `vim.on_key()` dialog pager callback after
          entering the cmdline below expanded messages.
          Use the MsgMore highlight group for the paging hint title.

0 files changed, 0 insertions, 0 deletions