Subscriptions: Verse block showing content in Monospace font

### Impacted plugin

Jetpack

### Quick summary

If the post published contains a Verse block, its font shows as expected on the site, but it uses a Monospace font when the post is sent to subscribers by email.

### Steps to reproduce

1. Write post content
2. Write some content in Verse Block
3. Write some content in Paragraph or Quote Block to compare
4. Publish, and check content on site
5. Check the content in the email where you got the post notification

### A clear and concise description of what you expected to happen.

The Verse block should show the content in same fonts on the site and the post notification email.

### What actually happened

The Verse block shows content on the site in expected fonts, but in Monospace font on the email.



### Impact

All

### Available workarounds?

No but the platform is still usable

### If the above answer is "Yes...", outline the workaround.

_No response_

### Platform (Simple and/or Atomic)

_No response_

### Logs or notes

_No response_

No file, test, or entry point is named. Start by reproducing the issue with a post containing Verse, Paragraph, and Quote blocks, then trace the Jetpack subscription email rendering; done means Verse content uses the same font in the email as on the site.

Written by the indexing model from the issue text.