[FLINK-37332] Support any column as chunk key column (postgres, orcale, db2, sqlserver) #3922 #3928
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This close #3922.
MySQL CDC connector supports this feature from flink cdc v3.2
Now, other connectors that support incremental snapshot allow any columns as chunk key column
apache jira: https://issues.apache.org/jira/browse/FLINK-37332
pr for docs: #3924
cc. @gtk96 @leonardBang @lvyanquan