Use the proper aspect ratio in flexbox
When computing the automatic minimum size, flex layout was using the
natural aspect ratio, ignoring the aspect-ratio property.
ReplacedContent::inline_size_over_block_size_intrinsic_ratio() is now
made private to avoid more accidental uses.
Signed-off-by: Oriol Brufau obrufau@igalia.com
Co-authored-by: Martin Robinson mrobinson@igalia.com