Revert "Remove custom xml namespaces for Fluid from RSS feed templates"

This reverts commit f5bb64e8.
4 jobs for revert/remove-namespaces-rss in 3 minutes and 31 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #17575
test:php

00:00:16

passed #17574
allowed to fail
test:typoscript

00:00:30

 
  Build
passed #17576
build

00:00:33

 
  Layout
passed #17577
layout

00:02:27