[HUDI-4139] improvement for flink sink operators so we can easily identify the table which write to hudi

for save resources sometimes we may use one solt to run a few tables like this

it is hard for identify the table name for each table we try to write to hudi,

so i try to refine the operator name for better use, the modified code like this

and the outcome like this:

so we can easily inquire each table‘s information