Adding emojis as reactions doesn't work anymore

[leobragaz]

## Bug description When adding a reaction to a post, if we use an emoji such as 👍, 🔥, etc...the transaction will be invalid due to an internal error (probably something related to the emojis library?). Need further investigation ```bash code: 111222 codespace: undefined data: "" gas_used: "44839" gas_wanted: "200000" height: "105" info: "" logs: [] raw_log: 'panic message redacted to hide potentially sensitive system info: panic ``` ## Steps to reproduce 1. Run a local chain 2. Create a subspace 3. Create a post in that subspace 4. Add a reaction to that post with an emoji ```desmos tx posts add-reaction 👍 --from --chain-id ``` ## Expected behavior Emoji reaction posted without any error.

[dadamu]

@bragaz I found that GetEmojiByShortCodeOrValue searches the emoji tables in emojidata.go. It loses the shortcodes list so the error happens. The table in emojidata.go should be updated to solve the problem.

[dadamu]

I think it could have an error handling here to avoid the panic with the following check.

if len(emojiReact.Shortcodes) {
    return sdkerrors.Wrap(sdkerrors.ErrInvalidRequest, "short code doesn't exist")
}

[leobragaz]

@dadamu I've digged into this more and found that somehow, the init() function of the Go-Emoji-Utils library (which is ours) it's not working. Basically shortcodes are not initialized, and this looks very weird since an init() function should always be called...what do you think @dadamu ?

[dadamu]

@bragaz I tried a while. init() function is run properly. However, the Emoji struct is not correct in the downloaded package and /data/emoji.json is not included. The upstream release package should be updated.

[RiccardoM]

Closing this as the x/posts module will need to be implemented again anyway