Update the style of the deprecated message for FlowLayout so it shows nicely in the docs
I.e. with the warning box similar to insets and other pages
Also rearrange the content so it's easy to understand new vs old with the seperate "migration" and "original docs" sections like on other docs pages, e.g. insets
Update the style of the deprecated message for FlowLayout so it shows nicely in the docs I.e. with the warning box similar to insets and other pages
Also rearrange the content so it's easy to understand new vs old with the seperate "migration" and "original docs" sections like on other docs pages, e.g. insets