The source project of this merge request has been removed.
The spritesheet should only load when an award emoji picker is opened.
This makes sure that the emoji spritesheet is loaded only when the emoji picker is opened. This saves 250-650KB on every page load.
Prevents !3785 (merged) from reverting the fix from !3449 (merged).
cc: @jschatz1 @zj @fatihacet