* ⚡ Keep the translation flag on undo and redo of a move
Previously undos and redos always forced a component sync + thumbnail
rerender for every component touched even if the underlying commits were just
translations. This propagates the translation flag to undos and redos and
propagates it to commit-changes. An entry merged from several undos/redos is
a translation only if all of its undos/redos are translations.
This reduces a UI freeze when undoing a move of a board with 453 components
from 2.42s -> 0.22s.
AI-assisted-by: claude-sonnet-5-5
* :translation? -> :translation
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Co-authored-by: Andrey Antukh <niwi@niwi.nz>