Improve FromAbbreviatedHeading for localized headings

[hangy]

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Adds localized parsing for FromAbbreviatedHeading for localized versions, and add new FromHeadingArrow method

Fixes #1103

[clairernovotny]

LGTM with the one fix

[clairernovotny]

This should be an additional method/override, so we don't break existing people.

[hangy]

Thanks! I think it should be fixed in 9d48857.