yxt-Card border for gridded cards surrounding whitespace

[creotutar]

.yxt-Card has styling for a border by default with
border: .0625rem solid #dcdcdc;

When we use a grid for our cards, this makes the cards stretch their height to match the height of the tallest card in the row, which leaves a lot of whitespace for the border to surround.
maxNumberOfColumns: 3,

We should instead put borders on the specific cards (e.g. Product-ProminentImage), or a wrapper for the actual content of the Card.

Env:
sdk 1.0.0
all browsers

[creotutar]

For example