[cdc-pipeline-connector][mysql] Ensure the inference of MEDIUMINT_UNSIGNED type matches table schema#2811

ruanhang1993 merged 2 commits intoapache:masterapache/flink-cdc:masterfrom

Jiabao-Sun:metadata-accessor-testJiabao-Sun/flink-cdc-connectors:metadata-accessor-testCopy head branch name to clipboard