Rich Text Editor: Add Smart List Exit Behavior

When users are working with unordered lists in the Rich Text Editor, they currently cannot easily break out of the list to start a new paragraph. The editor continues to create new bullet points even when users intend to exit the list structure.

Current Behavior

• The editor continues creating new bullet points indefinitely
• Users have no intuitive way to exit list mode
• Empty bullet points persist even when users likely intend to start a new paragraph

Expected Behavior

• After creating two consecutive empty bullet points, the editor should:
  • Remove the last empty bullet point
  • Exit list mode
  • Allow the user to begin typing in a new paragraph
• This behavior should mirror other popular Rich Text Editors like Slack's implementation

User Impact

This improvement would:

• Reduce user frustration
• Speed up content creation
• Match users' mental models from other common editing tools
• Eliminate the need for workarounds to exit list mode

Example provided by @jmandell

Current	Expected