Fix Msg3 with MAC CE for C-RNTI and RRCReestablishmentComplete - Only trigger RRCReconfiguration if UE is not performing RRCReestablishment - The RRCReconfiguration will be triggered by the RRCReestablishmentComplete Since this MR fixes a regression, additional info can be found in the following closed issues and merged MR: - #687 (closed) - #747 (closed) - !2600 (merged)