[BUG] The MathML didn't get correctly rendered in the Follow

Platform

Desktop - Web

Describe the bug

MathML is the web standard for displaying the math formula in the web page. It has been supported by almost all the modern brower. But Follow try to convert the mathml tag into the Katax which leds to the incorrectly displaying and ugly typeset. You can see the screenshot below.

I think we should keep the mathml related tags as it is. And this will make the mathml formulas be rendered directly by the browser. For example. The same article render result in Miniflux is shown below.

Entry ID

No response

Relevant Information

https://yufan.me/feed

Reproduction Video

No response

Environment

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Validations

• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A, please open a GitHub Discussion instead.
• This issue is valid

Contributions

• I am willing to submit a PR to fix this issue
• I am willing to submit a PR with failing tests (actually just go ahead and do it, thanks!)

Start by reproducing the rendering problem with the linked feed at https://yufan.me/feed and compare the MathML output with the expected browser-rendered result described in the issue. Trace the Follow rendering path that converts MathML to KaTeX; done means MathML-related tags are preserved so the browser renders the formulas directly.