feat(ui2): configure maximum window heights #38392

Problem:
- Window height is set dynamically to match the text height,
  making it difficult for the user to use a different height.
- Cmdwin is closed to enter the pager but still taken into
  account for the pager position, and not restored when
  the pager is closed.
- Dialog pager handler may unnecessarily consume <Esc>.

Solution:
- Add maximum height config fields for each of the UI2 windows,
  where a number smaller than one is a fraction of 'lines',
  absolute height otherwise (i.e. `cfg.msg.pager.height = 0.5`).
- If the cmdwin will be closed to enter the pager, don't try
  to position the pager above it. Re-enter the cmdwin when the
  pager is closed.
- Only add vim.on_key() handler for the dialog paging is actually
  possible.

0 files changed, 0 insertions, 0 deletions