Fix compose comment for proposals

[Megha-Dev-19]

• Fixed change in height (expand/collapse) of editor when long comment is added
• Added loader when txn is initiated
• Added toast confirmation after comment is posted Preview link

Summary by CodeRabbit

• New Features

  • Enhanced comment functionality on proposals with real-time updates and auto-focus capabilities.
  • Improved editor components with keyup actions, visibility settings, and dynamic resizing.

• Enhancements

  • Updated sorting function to actively subscribe to new comments.
  • Refined comment submission process with visual feedback through toasts and loading indicators.

• Bug Fixes

  • Adjusted event handling in editors to ensure smooth interaction and performance.