Fix multicursor indentation (#64675)

# Objective

- Fixes #21334.

## Solution

- Preserve indentation during multicursor edits and selected-block
indentation.
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Release Notes:

- Fixed indentation corruption during multicursor editing and block
indentation.

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Co-authored-by: Kirill Bulatov <kirill@zed.dev>
ec609f84c1Gautam Manchandani committed on 9/24/2026, 11:09:12 PM· committed by GitHubparent25303a4
4 files changedLine totals unavailable