[session] try to reconnect on unexpected error in system_sql. We need this for proper reconnection of pool used by hooks or looping task doing sql queries (such as cw_cleanup_transaction)

0.0.2: 2.3.0
0.0.3: 2.4.0
# missing 0.0.4 entry, that's alright
0.1.0: 2.6.0
0.1.2: 2.10.0