TenantId static initializer replaced with a static variable order

common/data/src/main/java/org/thingsboard/server/common/data/id/TenantId.java

@@ -28,13 +28,10 @@ import java.util.UUID;
 public final class TenantId extends UUIDBased implements EntityId {
 
     @JsonIgnore
-    public static final TenantId SYS_TENANT_ID = new TenantId(EntityId.NULL_UUID);
-
     static final ConcurrentReferenceHashMap<UUID, TenantId> tenants = new ConcurrentReferenceHashMap<>(16, ReferenceType.SOFT);
 
-    static {
+    @JsonIgnore
-        tenants.put(SYS_TENANT_ID.getId(), SYS_TENANT_ID);
+    public static final TenantId SYS_TENANT_ID = TenantId.fromUUID(EntityId.NULL_UUID);
-    }
 
     private static final long serialVersionUID = 1L;