Not possible to input `14.` or other numbers as the beginning of a sentence or headline.

[seehat]

When i input a number with a dot and press the spacebar the text gets converted to a numbered list, which i don't want in every case.

Steps to reproduce the behavior:

1. Go to page with editor.
2. Type '14. ' in the editor
3. See the line getting converted to a numbered list.

I would like to be able to input such line beginnings.

• Kirby: 3.4.4
• OS: macOS Catalina
• Browser: Chrome
• Version: 84