Modal does not close after sending a GIF

[telegrace]

Repro Steps:

1. In Slack type /search in the message
2. Select search gifs with trial-1-giphy
3. Type cat or another other search
4. Select a channel and continue
5. Send a gif with the send button
6. Observe the issue

Suggested Fix:
Once the gif has been sent close the modal.

[kayakapagan]

The problem is, slack api is not support to close modal after an action call, for it to be closed, there should be a view_submission, you can find the necessary link here.

We can leave it as it is, or we can change the send button with a selection process and put a send button as a modal submit button. For now, it will stay as it is, later it may be updated.