Corrected release labels

- Iris release version is 4.3.3
- Loader build defaults use the plain release version
- Platform jar labels retain their supported game versions

gradle.properties

@@ -21,7 +21,7 @@ org.gradle.jvmargs=-Xmx3072m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF
 org.gradle.caching=true
 org.gradle.configureondemand=false
 
-irisVersion=4.3.3-26.2
+irisVersion=4.3.3
 minecraftVersion=26.3
 # Bukkit plugin api-version: lowest supported Minecraft release line so one artifact loads on 26.1.2 through 26.3
 apiVersion=26.1