honestly flex grow should just be a default mastodon toggle

@boots the media preview is still not growing according to height though.

@deerfox @boots media seems to be hardcoded to 110px on html with no class, so it's nigh impossible so solve only in the scss unless you get clever with selectors

same with the boost header in the home column (the boost header in the notifications column has a class though, which leads me to believe mastodon is just bad at html)