ep_font_family v0.5.46 applies all available fonts

[mjmccarn]

When I apply a font family using "ep_font_family", the resulting html looks like this:

<span class="author-a-mda40z65zz82zz75zn6z84zfp6z86zd fontarial fontavant-garde fontbookman fontcalibri fontcourier fontgaramond fonthelvetica fontmonospace fontpalatino fonttimes-new-roman">
    <fontarial>
        <fontavant-garde>
            <fontbookman>
                <fontcalibri>
                    <fontcourier>
                        <fontgaramond>
                            <fonthelvetica>
                                <fontmonospace>
                                    <fontpalatino>
                                        <fonttimes-new-roman>blah&nbsp;</fonttimes-new-roman>
                                    </fontpalatino>
                                </fontmonospace>
                            </fonthelvetica>
                        </fontgaramond>
                    </fontcourier>
                </fontcalibri>
            </fontbookman>
        </fontavant-garde>
    </fontarial>
</span>

By comparison, before applying any changes using ep_font_family, the html looks like this:

<span class="author-a-jxc196z83zz73zu2z71zz79zz69zz65zvx">blah</span>

Host Info:

• Debian Bookworm 12.12
• node v22.20.0
• pnpm v9.14.4

Etherpad Info:

• Version number 2.5.0 (Git sha 7d077e1)

• Installed plugins
  ep_adminpads3 v3.0.22
  ep_embedded_hyperlinks2 v1.2.4
  ep_etherpad-lite v2.5.0
  ep_font_family v0.5.46
  ep_font_size v0.4.65
  ep_linkify2 v0.1.3
  ep_markdown v10.0.1