fix: Freire theme doesn't apply

[andersonjeccel]

Q	A
Bug fix? (use the a.b branch)	✔️
New feature/enhancement? (use the a.x branch)	❌
Deprecations?	❌
BC breaks? (use the c.x branch)	❌
Automated tests included?	❌
Related user documentation PR URL	mautic/user-documentation#...
Related developer documentation PR URL	mautic/developer-documentation-new#...
Issue(s) addressed	Fixes #...

Description

This PR fixes a bug where the Freire theme wasn't being applied because of a change to the theme name in CSS. Before, selecting the Freire theme took no effect on saving.

---

📋 Steps to test this PR:

1. Open this PR on Gitpod or pull down for testing locally (see docs on testing PRs here)
2. Open Account (your profile)
3. Open tab Appearance
4. Select the theme Freire
5. Click Save

If your browser has autocomplete, remove the automatically filled password from the Password field, on the first tab, before following these steps, otherwise this will prevent you from saving

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 66.37%. Comparing base (f304652) to head (f53292d). Report is 127 commits behind head on 7.x.

Additional details and impacted files

@@            Coverage Diff            @@
##                7.x   #15093   +/-   ##
=========================================
  Coverage     66.37%   66.37%           
  Complexity    35173    35173           
=========================================
  Files          2316     2316           
  Lines        141741   141741           
=========================================
+ Hits          94086    94087    +1     
+ Misses        47655    47654    -1     

see 1 file with indirect coverage changes

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