Defaults to a single row in children order. An explicit layout chunks the
panels row-major: columns fixes the panels per row; otherwise rows
derives the column count. Never produces empty rows (the MAIDR core cannot
represent them); the last row may be shorter (ragged rows are supported).
Chunks subplot panels into a row-major 2D grid.
Defaults to a single row in children order. An explicit
layoutchunks the panels row-major:columnsfixes the panels per row; otherwiserowsderives the column count. Never produces empty rows (the MAIDR core cannot represent them); the last row may be shorter (ragged rows are supported).