Unify pathway card hover style with themes, plugins

[jasmussen]

It’s nice that there’s a big gray hover style on these:

However we settled on a charcoal (almost black) border color on hover, instead of a background color change, for Plugins and Themes, it would probably be best to do the same here. That also avoids the discrepancy where the pathways cards have a hover style, but the course cards do not.

[ryelle]

@jasmussen This appears to be inheriting this style from the parent theme, and the same style is used on (at least) Forums & Developer Resources landing pages. Should it be updated everywhere?

[jasmussen]

Excellent catch. I'm conflicted, the gray hover style is quite nice in most of those place. Perhaps we leave this as is. @WordPress/meta-design

[fcoveram]

The hover style of cards and other similar elements placed in grids is a big topic. I aim for consistency as well, but in this case, I would keep it as is and address the issue once we're done with the style updates of the site.

[adamwoodnz]

Closing, as it seems there is general agreement that consistency with other sites in the 'Learn' category is most important here, and therefore we should leave this as is for now. We can address later site wide if necessary.