feat(jans-auth-server): Unnecessary "session not found" error messages during refresh token flow

[yuriyz]

Description

We should avoid unnecessary error messages during refresh token flow

(SessionIdService.java:793) - Failed to get session by dn: oxId=ca2a0a20-bef5-468f-9708-759ce02919ff,ou=sessions,o=gluu
org.gluu.persist.exception.EntryPersistenceException: Failed to find entry: oxId=ca2a0a20-bef5-468f-9708-759ce02919ff,ou=sessions,o=gluu
        at org.gluu.orm.couchbase.impl.CouchbaseEntryManager.find(CouchbaseEntryManager.java:376) ~[gluu-orm-couchbase-4.4.1.Final.jar:?]
        at org.gluu.persist.impl.BaseEntryManager.find(BaseEntryManager.java:714) ~[gluu-orm-core-4.4.1.Final.jar:?]
        at org.gluu.persist.impl.BaseEntryManager.find(BaseEntryManager.java:593) ~[gluu-orm-core-4.4.1.Final.jar:?]
        at org.gluu.persist.impl.BaseEntryManager.find(BaseEntryManager.java:580) ~[gluu-orm-core-4.4.1.Final.jar:?]
        at jdk.internal.reflect.GeneratedMethodAccessor82.invoke(Unknown Source) ~[?:?]
        at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:?]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:?]
        at org.jboss.weld.bean.proxy.AbstractBeanInstance.invoke(AbstractBeanInstance.java:38) ~[weld-core-impl-3.1.9.Final.jar:3.1.9.Final]
        at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:106) ~[weld-core-impl-3.1.9.Final.jar:3.1.9.Final]
        at org.gluu.persist.PersistenceEntryManager$EntityManager$1948487569$Proxy$_$$_WeldClientProxy.find(Unknown Source) ~[gluu-orm-core-4.4.1.Final.jar:?]
        at org.gluu.oxauth.service.SessionIdService.getSessionByDn(SessionIdService.java:787) ~[classes/:?]
        at org.gluu.oxauth.service.SessionIdService.getSessionByDn(SessionIdService.java:751) ~[classes/:?]
        at org.gluu.oxauth.service.SessionIdService$Proxy$_$$_WeldClientProxy.getSessionByDn(Unknown Source) ~[classes/:?]
        at org.gluu.oxauth.model.token.IdTokenFactory.fillClaims(IdTokenFactory.java:126) ~[classes/:?]
        at org.gluu.oxauth.model.token.IdTokenFactory.createJwr(IdTokenFactory.java:270) ~[classes/:?]
        at org.gluu.oxauth.model.token.IdTokenFactory$Proxy$_$$_WeldClientProxy.createJwr(Unknown Source) ~[classes/:?]
        at org.gluu.oxauth.model.common.AuthorizationGrant.createIdToken(AuthorizationGrant.java:102) ~[classes/:?]
        at org.gluu.oxauth.model.common.AuthorizationGrant.createIdToken(AuthorizationGrant.java:309) ~[classes/:?]

oxauth counterpart: GluuFederation/oxAuth#1824