From: Andy Allan <git@gravitystorm.co.uk>
Date: Thu, 18 Jan 2024 10:29:56 +0000 (+0000)
Subject: Move change detection to validation declaration
X-Git-Tag: live~1307^2
X-Git-Url: https://git.openstreetmap.org/rails.git/commitdiff_plain/0a210801928a00d02ad8b9df809650004ae60f74?hp=0a210801928a00d02ad8b9df809650004ae60f74

Move change detection to validation declaration

This aligns with other validations. Also add test to ensure unchanged
display_names are treated as valid.
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