[BUG] Callsign fetching only works with icao callsign

[cyteon]

Describe the bug
When trying to fetch a IATA callsign "MU1689", it does not return any results.
But when trying to fetch the ICAO callsign "CES1689", it returns the data, along with a property callsign_iata which has the callsign above

To Reproduce
Steps to reproduce the behavior:

1. Go to https://api.adsbdb.com/v0/callsign/MU1689, notice it not working
2. Go to https://api.adsbdb.com/v0/callsign/CES1689, notice it working cause its the ICAO instead of IATA

Expected behavior
I expect both IATA and ICAO to work.

Screenshots

IATA callsign does not work:

ICAO callsign works, and has IATA callsign in data

Desktop (please complete the following information):

• OS: Linux 6.15.9-106.bazzite.fc42.x86_64

[mrjackwills]

Is this still the case? I can't get it to replicate, both the ICAO and IATA links seem to work?

The 0.5.0 release has an updated IATA query