Fix Chief mappings to hectolitre.

This fixes missing CHIEF measurement units for Excise 412 measures.

Examples:
https://tariff.preview.alphagov.co.uk/trade-tariff/commodities/2204291000#import
https://tariff.preview.alphagov.co.uk/trade-tariff/commodities/2205101000#import

Some national measures do not have measurement units which should be Hectolitre.