Switch to @SelectKey for id generation in createPrivilegedUser and remove unused @Nullable import.

database/src/main/java/com/alttd/altitudeweb/database/web_db/PrivilegedUserMapper.java

@@ -1,7 +1,6 @@
 package com.alttd.altitudeweb.database.web_db;
 
 import org.apache.ibatis.annotations.*;
-import org.jetbrains.annotations.Nullable;
 
 import java.util.List;
 import java.util.Optional;
@@ -106,6 +105,6 @@ public interface PrivilegedUserMapper {
         INSERT INTO privileged_users (uuid)
         VALUES (#{uuid})
         """)
-    @Options(useGeneratedKeys = true, keyProperty = "id", keyColumn = "id")
+    @SelectKey(statement = "SELECT LAST_INSERT_ID()", keyProperty = "id", before = false, resultType = int.class)
     int createPrivilegedUser(UUID uuid);
 }