[FEAT] Update modal to be closable from within the modal

[xelaint]

💡 Feature request

Feature Name

Update modal to be closable from within the modal.

The Desired Behavior

The modal should be closable from within the modal (i.e. close icon button or text close button). Modal is currently only closable by clicking on the backdrop.

Your Use Case

Prior Work

Environment

Daffodil version: X.Y.Z
Angular version: X.Y.Z 

 
For Tooling issues:
- Node version: XX  
- Platform:  

Others:

[xelaint]

Fixed by #2832