Allow message splitting with multiple cursors (#2627)

Closes
https://linear.app/zed-industries/issue/Z-2408/make-block-splitting-work-with-multiple-cursors
70ccbbafc1Antonio Scandurra committed on 6/19/2023, 10:07:16 AM· committed by GitHubparentsc858ab2c9df963
1 file changedLine totals unavailable