Problem was that we removed the parameter for the loadEmojis function
because we didn't do a full text search on the entire codebase to see
where it was actually used.
Also changed loading to reject the promise to ignore later keystrokes
while the modal is still loading.
Previously, on the first use of the inline emoji modal, it would not
display the emojis because the display code would not wait for the
network request to resolve.
Now, the modal will appear when the emojis are successfully loaded and
then respond to the keystrokes.
KindaCrayCray