Update Fields.tpl

[kurund]

Overview

Fixes for https://lab.civicrm.org/dev/core/-/issues/2967

[civibot]

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[colemanw]

Hey @kurund we can trade reviews on this - I have these which need looking at: https://github.com/civicrm/civicrm-core/pulls?q=is%3Aopen+is%3Apr+author%3Acolemanw+search+-is%3Adraft+

[kurund]

Not sure if I would get to all of them but can review few :)

[colemanw]

I reviewed this code and can confirm it fixes the issue without introducing any potentially undefined smarty variables. It does reference a potentially undefined {$prefix} but that's a pre-existing issue that can be addressed at the form level per Eileen's work in this area.