rss.php does not recognize all <link> as valid URL

[boomboxnation]

Please complete the following tasks.

• Web browser cache cleared
• Link provided to install script if applicable
• Web browser, ruTorrent, PHP and OS version provided

Tell us about your environment

Web Browser: Vivaldi Stable
rutorrent: master-current(?)
PHP 8.1.18
OS: Manjaro? Alpine-linux? Docker.

Tell us how you installed ruTorrent

docker pull ghcr.io/crazy-max/rtorrent-rutorrent:edge

Describe the bug

rss.php is not recognizing all <link> as valid urls and using the <guid> if valid instead. First discussed in #2500

Something in my torrent IDs is invalidating the valid URL checker.

https://www.BLARGH.net/tor/download.php/7W0pSLI4asiHLzxtEm83RzUKmn8yM6cjUuQGwdG5rrnXZjjibq,,yt6jo7Db+LBNBHXZ,6+tx9iGxqY,j,beUD9oJO,Ej4+yt+N8g6xJxxbF2ji9riA++libga39A7d6KuWJfsPKAnfAeqk3oylBjr8EuJqmSzfrJ6Va0GqtjMCMsSBj87bayo4=

This makes sense as like 3 out of 100 did load properly. Here is the URL for one I think loaded properly:

https://www.BLARGH.net/tor/download.php/qCc7UKnOT0nQIE+MfYeVO9zfJfe2++xYUTAq0IyMELTwB2iICoeH5hx9pwQwQPOvgGDp1,C9Ydv7ms12y0ai7BEpnFQbSPWgrgwC7CC+Q78lvU840bk2gMl3e94MqLVdN3UFbhADX5BDIEexzxZbgEzwYSfovbVX9plLCDPeP0WclkKKAao9umQ=

Entire <item> section for a non-loading one...

<item>
<guid>https://www.BLARGH.net/t/928108</guid>
<title>Just another linux iso</title>
<link>https://www.BLARGH.net/tor/download.php/7W0pSLI4asiHLzxtEm83RzUKmn8yM6cjUuQGwdG5rrnXZjjibq,,yt6jo7Db+LBNBHXZ,6+tx9iGxqY,j,beUD9oJO,Ej4+yt+N8g6xJxxbF2ji9riA++libga39A7d6KuWJfsPKAnfAeqk3oylBjr8EuJqmSzfrJ6Va0GqtjMCMsSBj87bayo4=</link>
<category>LINUX ISO</category>
<description>A single script to build a minimal live Linux operating system from source code that runs Doom on boot. <br/></description>
<pubDate>Sun, 30 Apr 2023 12:36:28 +0000</pubDate>
</item>

Steps to reproduce

Add an rss feed with <link> that fails the valid url checker but has a <guid> that succeeds.

Expected behavior

Recognize <link> as valid and Load.

Additional context

Please see the end half of #2500