<mark> Element ("==...==") not rendering correctly if other formatting is embedded

[diepoe]

Describe the bug
If I want to mark text that is formatted (f.e. bold or italic) with the "==" syntax, the text stays formatted, but instead doesn't get highlighted and the == show up:

To Reproduce
Steps to reproduce the behavior:

1. Enter example phrase ==foo, bar, **this should be highlighted and bold at the same time**==
2. Compare results in Obsidian and in Quartz

Expected behavior
The formatted text is expected to be highlighted correctly like in this screenshot taken in Obsidian:

Screenshots and Source
See above

Desktop (please complete the following information):

• Quartz Version: v4.4.0
• node Version: 23.3.0
• npm version: v10.9.0
• OS: macOS, deployed with GitHub Pages/Actions
• Browser; Safari

Additional context