Add support for predicate pushdown for both metadata and protocol in CheckpointEntryIterator

[ebyhr]

trino/plugin/trino-delta-lake/src/main/java/io/trino/plugin/deltalake/transactionlog/checkpoint/CheckpointEntryIterator.java

Lines 185 to 187 in e1dc146

	TupleDomain<HiveColumnHandle> tupleDomain = columns.size() > 1 ?
	TupleDomain.all() :
	buildTupleDomainColumnHandle(getOnlyElement(fields), getOnlyElement(columns));