Fixes #5122. Visible popovers are always layout and redrawn in every iteration unnecessarily.#5123

tig merged 2 commits intogui-cs:developgui-cs/Terminal.Gui:developfrom

BDisp:fix/5122_visible-popovers-always-redrawingBDisp/Terminal.Gui:fix/5122_visible-popovers-always-redrawingCopy head branch name to clipboard