[FLINK-38209][FLINK-38379][FLINK-38554][FLINK-38576][FLINK-38230][table] Backport multiple MultiJoin fixes to 2.1#27829

gustavodemorais wants to merge 6 commits intoapache:release-2.1apache/flink:release-2.1from

gustavodemorais:FLINK-38576-multijoin-backport-2.1gustavodemorais/flink:FLINK-38576-multijoin-backport-2.1Copy head branch name to clipboard