sysutils/tmux: Fix crash when text selection using mouse

I re-ported a patch originally ported to 3.2a by Tobias Brick, a
Microsoft employee to 3.3a. The patch depends on ncurses 6.4-20230423 or
later so I bind this port to ncurses:port.

See commit message of the patch for detail [1]

[1] https://github.com/microsoft/azurelinux/blob/a1f78f2/SPECS/tmux/manual-patch-to-fix-crash-due-to-change-to-ncurses.patch

PR: 279276
Approved by: maintainer timeout
Obtained from: https://github.com/microsoft/azurelinux/issues/6598
Obtained from: https://github.com/microsoft/azurelinux/pull/6766