Converts a local instant to a standard UTC instant with the same local time attempting to use the same offset as the original.
This conversion is used after performing a calculation where the calculation was done using a simple local zone. Whenever possible, the same offset as the original offset will be used. This is most significant during a daylight savings overlap.
@param instantLocal the local instant to convert to UTC
@param strict whether the conversion should reject non-existent local times
@param originalInstantUTC the original instant that the calculation is based on
@return the UTC instant with the same local time,
@throws ArithmeticException if the result overflows a long
@throws IllegalArgumentException if the zone has no equivalent local time
@since 2.0