[BUG] Root cause for DST-related time parsing issues in DateTimeUtils

[Dominik Chyziak]

class:
org.apache.iotdb.db.utils.DateTimeUtils

In the method toZoneOffset(ZoneId zoneId), the code resolves a named time
zone to a fixed offset using the current system time:

public static ZoneOffset toZoneOffset(ZoneId zoneId) {
  return zoneId.getRules().getOffset(Instant.now());
}

Bug related to Issue #12537