editor: Shrink `DisplayMapSnapshot` from `824` to `256` bytes (#39568)

We have unnecessary clones for the fields here as most of the snapshots
contain the others hierarchically.

Release Notes:

- N/A *or* Added/Fixed/Improved ...
2bfcd60b88Lukas Wirth committed on 10/6/2025, 8:08:49 AM· committed by GitHubparent9c7369f
48 files changedLine totals unavailable