Update to iD v2.27.3

[tyrasd]

Note that this introduces a kind of "hardcoded" runtime check (here) of whether the running instance is the main one on osm.org, in which case it switches the API connection to use the api.openstreetmap.org subdomain. Otherwise the API running on the website's domain is used (e.g. when running a dev instance locally or other test instance). Is there perhaps a better way to detect this in the ruby code somehow? Please let me know.

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Changelog:

• Switch to api.openstreetmap.org domain for OSM API calls (API users should use api.openstreetmap.org host operations#951)
• Show field for changeset sources by default in the upload form
• Fix autocomplete in combo fields sometimes switching to a different value after a short time (#9898)
• Fix regression in improperly escaped usernames (#9906)
• Improve backwards compatibility with some old browsers (#9934)
• Refresh dependencies, including osm-community-index to 5.6.0, temaki to 5.6