A UE might send a rrcReestablishmentComplete without the actual IEs
present (intentionally or not). Check this and handle appropriately to
avoid assertion

    Assertion (reestablishment_complete->criticalExtensions.present == NR_RRCReestablishmentComplete__criticalExtensions_PR_rrcReestablishmentComplete) failed!
    In handle_rrcReestablishmentComplete() ../../../openair2/RRC/NR/rrc_gNB.c:1364

Closes: #854