DocCard automatically detects digits as emoji, causing weird rendering

[ian-rehwinkel-lablions]

Have you read the Contributing Guidelines on issues?

• I have read the Contributing Guidelines on issues.

Prerequisites

• I'm using the latest version of Docusaurus.
• I have tried the npm run clear or yarn clear command.
• I have tried rm -rf node_modules yarn.lock package-lock.json and re-installing packages.
• I have tried creating a repro with https://new.docusaurus.io.
• I have read the console error message carefully (if applicable).

Description

Due to the Regex used here, digits are recognized as Emojis. This is because for some reason /\p{Emoji}/u.test("1") === true.
Unfortunately, this causes the following behavior when the title of a page starts with a number (in this case 11).

Reproducible demo

https://stackblitz.com/edit/github-intrjsrr

Steps to reproduce

Add to frontmatter:

---
title: 11 Something
...
---

Look at DocCard generated for this page.

Expected behavior

Number should be recognized as Text and therefore not be used as the icon.

Actual behavior

The number is recognized as an emoji, making it the icon in the DocCard.

Your environment

No response

Self-service

• I'd be willing to fix this bug myself.