Learn Page: Landscape mode Improvement

[moiz994]

We need to update the primary card on the Learn page for landscape mode. Currently, the course image takes the whole width of the screen and pushing down the rest of the CTAs.

The following design helps solve this problem by making the course image and primary card CTAs stay side by side.

Figma link

[moiz994]

@marcotuts @volodymyr-chekyrta FYI: 2U will be picking this improvement for the primary card landscape view. I've created a similar ticket in the Android epic.