As a user, I want to autofit row heights while keeping fixed column widths in Excel templates

Description: Allow autofit to be set separately for rows and columns in Excel templates, e.g. ${prop(document.autofitrows,true)} and ${prop(document.autofitcolumns,false)}.

User friction: ${prop(document.autofit)} applies to both rows and columns, so it's not possible to keep fixed column widths while rows grow to fit their content. In PDF exports the layout can't be adjusted afterwards.

What would improve if solved: Templates keep their column layout with rows sized to the content, in Excel and PDF output.

Current workaround: Set row heights manually with ${prop(document.autofit,false)}, which only works for predictable content length.