Fix React key warning in <Report>
Fix React key warning in <Report>

Redmine #4262

ENCODE-DCC/encoded,T2DREAM/t2dream-portal,ENCODE-DCC/encoded,T2DREAM/t2dream-portal,ENCODE-DCC/encoded,ENCODE-DCC/encoded,T2DREAM/t2dream-portal,T2DREAM/t2dream-portal