Avoid duplicate drive-through field on post boxes

[amannsan]

Description, Motivation & Context

The Mail Drop Box preset currently references both the US-specific drive_through-US field and the unrestricted drive_through field. In the United States, the second field becomes visible after the tag is set, so the same key is rendered twice.

This adds a location-scoped companion field for use in moreFields. The US keeps its existing primary field, while the optional field remains available everywhere else. The new field cross-references the existing label so it does not introduce a duplicate translation string.

Related issues

Closes #2762

Testing

• npm run lint
• npm run build
• npm test

[github-actions]

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[amannsan]

Test documentation

Preview checks

• United States test location
  • Selected the Mail Drop Box preset.
  • Drive-Through appeared exactly once before setting a value.
  • After setting it to Yes, the sidebar still showed exactly one Drive-Through field and the tag was drive_through=yes.
• Outside-US test location
  • Drive-Through was not shown among the initial fields.
  • Searching Add field for Drive-Through returned the field, so it remains available outside the US.

Search

Searching for Mail Drop Box returned the expected preset in both locations.

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[matkoniecz]

Thanks for the PR! It is now merged but note that before you will see it in iD few things need to happen.

iD tagging schema needs to get release (see https://github.com/openstreetmap/id-tagging-schema/releases - latest one mentioned there is just a draft). And later needs to be pulled in by iD.

Thanks again for your contribution! If you are interested in making other one it would be really welcome!

If you are looking for some easy and useful task look here. If you would try one of those and got stuck and existing documentation is insufficient - will free to ask for help!