feat: added NGN currency

[aniskhalfallah]

Description

Closes #1226
Added Naira currency.

Screenshots

Additional Context

Checklist

Are your changes backwards compatible? Please answer below:

Yes, by deleting the line that adds the Naira Currency

Did you QA this? Could we deploy this straight to production? Please answer below:

Yes

For frontend changes: Tested on mobile? Please answer below:

N/A

Did you introduce any new environment variables? If so, call them out explicitly here:
N/A

[ekzyis]

Sorry for the slow review, works well!

A nitpick (which was already the case prior to this PR) is that we show the new currency symbol with the old value until the new data price data is fetched. This can take up to 30s.

I briefly looked into refetching it immediately using useEffect in PriceProvider but since we do the price lookup asynchronously in the backend, it requires more changes than I expected for such a small detail.

[aniskhalfallah]

Hello @ekzyis Thanks for the review !
I noticed the issue after you mentioned it, I looked into it by using useEffect to refetch after changing the currency:

useEffect(() => {
    if (fiatCurrency) {
      refetch({ fiatCurrency });
    }
  }, [fiatCurrency, refetch]);

I tested it, and in my requests I see a query 1 second after I change the currency

I am still a noob so I am not sure whether this fixes the issue or not since you said it requires more changes, Let me know what you think.