Hi,
Persian Gulf is the historical and international name of the gulf which is also recognized by United Nations. This name is also the native name used in Iran. However currently in your map an Arabic name is used which is not Persian Gulf. So why did you decided to not to use international, historical and Iranian name and only use an Arabic name?
reminder of geography:
https://en.wikipedia.org/wiki/Persian_Gulf
https://en.wikipedia.org/wiki/Persian_Gulf_naming_dispute
Geographical names are in a local language. Persian Gulf borders with 7 Arabic-speaking countries and only one Persian-speaking country so that’s why it’s in Arabic.
Note that the gulf: https://www.openstreetmap.org/relation/9326283#map=8/26.709/54.923
has the name defined for MANY languages, plus the default or local name as defined by the simple “name” tag and chosen by the logic described above.
It’s up to the map (not the database) to decide which language to show. Some maps use the local name. Some maps use the English name (name:en tag) if available. Some maps allow you to choose the language to display, example https://www.openandromaps.org/en/downloads/asia-middle-east which offers Arabic or English for this region. Another map shows the German name: https://www.openstreetmap.de/karte.html . And so on.