Preventing Opening Overlay Editor on Row or Col Append

[BrianHung]

Sort of a duplicate of #387

Is there a way to prevent opening the overlay editor on row or col append?

I want to append a new row after finishing editing a cell on the trailing row, but not have it enter cell editing mode. This is because I'd prefer normal cell selection, since I'm using arrow keys on trailing rows (and cols) to resize if no content. Demo below:

CleanShot.2022-12-02.at.14.42.45.mp4

The current flow is

// https://github.com/glideapps/glide-data-grid/blob/main/packages/core/src/data-editor/data-editor.tsx
onFinishEditing
updateSelectedCell // if editing trailing row
setGridSelection
appendRow

Wondering if we can instead customize this default behavior within a custom appendRow in onFinishEditing, like so

            const [movX, movY] = movement;
            if (gridSelection.current !== undefined && (movX !== 0 || movY !== 0)) {
                const isEditingTrailingRow = newValue !== undefined && gridSelection.current.cell[1] === mangledRows - 1;
                const isEditingTrailingCol = newValue !== undefined && gridSelection.current.cell[0] === mangledCols.length - 1;
                let updateSelected = true;
                if (isEditingTrailingCol && movX === 1) {
                    updateSelected = false;
                    const row = gridSelection.current.cell[1] + movY;
                    appendColumn(row, false); // Don't open overlay editor on append.
                }
                if (isEditingTrailingRow && movY === 1) {
                    updateSelected = false;
                    const col = gridSelection.current.cell[0] + movX;
                    const customTargetColumn = getCustomNewRowTargetColumn(col);
                    appendRow(customTargetColumn ?? col, false); // Don't open overlay editor on append.
                }
                updateSelected && updateSelectedCell(
                    gridSelection.current.cell[0] + movX,
                    gridSelection.current.cell[1] + movY,
                    false,
                    false
                );
            }
            onFinishedEditing?.(newValue, movement);

And change the api for appendRow to

    const appendRow = React.useCallback(
        async (col: number, openOverlay: boolean = true) => {