Tiles extend off the bottom of the screen

[perennialAutodidact]

When there are more than 4 rows of tiles, they bleed off the bottom of the screen. Instead, they should shrink to fit so no vertical scroll is needed on desktop and mobile screens. The width of the tile grid container might have to increase in width to fit the tiles on mobile devices if it doesn't already do so.

[perennialAutodidact]

The designs for the form have 32 as the max number of tiles, so setting quantity: 16 in packages/frontend/src/contexts/photos/index.js would produce 32 tiles.