Show proper flag name in inventory on modern

[Javggg]

This fixes the name shown for the flag item in the inventory.
From this:

To this:

[TTtie]

I think a more clean fix for this would be to render the translations in ModernColorUtils (see below) instead (this is done in 1.8, but not in modern)

Edit: appended blocks showing inconsistency between modern and 1.8:

PGM/platform/platform-modern/src/main/java/tc/oc/pgm/platform/modern/material/ModernColorUtils.java

Lines 120 to 123 in 0e8279c

	@Override
	public void setName(Component coloredName) {
	meta.displayName(coloredName);
	}

PGM/platform/platform-sportpaper/src/main/java/tc/oc/pgm/platform/sportpaper/material/SpColorUtils.java

Lines 91 to 94 in 0e8279c

	@Override
	public void setName(Component coloredName) {
	meta.setDisplayName(TextTranslations.translateLegacy(coloredName));
	}

[Pablete1234]

This should be elsewhere, the flag.getBannerItem() should already be getting a renamed flag, as that's done once instead of every time

go look at the constructor for Flag and figure out why its a problem there