regression: SVG sanitization of Omnichannel rooms' icons

[tassoevan]

Proposed changes (including videos or screenshots)

It compensates DOMPurify sanitization process, which wipes out SVG elements not contained in a <svg> root element.

Issue(s)

CONN-485

Steps to test or reproduce

Further comments

[dionisio-bot]

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[github-actions]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.17%. Comparing base (3c4a9b8) to head (dd75915).
Report is 1 commits behind head on release-7.3.0.

Additional details and impacted files

@@              Coverage Diff               @@
##           release-7.3.0   #35043   +/-   ##
==============================================
  Coverage          59.17%   59.17%           
==============================================
  Files               2821     2821           
  Lines              68131    68131           
  Branches           15152    15152           
==============================================
  Hits               40316    40316           
  Misses             24981    24981           
  Partials            2834     2834           

Flag	Coverage Δ
unit	74.99% <ø> (ø)

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