[Contextual Tokens] Refactor Dialog in code

[DanielleRameau]

Provide a general summary of the issue here

• Refactor dialog to contextual tokens (see design in figma)
• Refactor message dialog
• Research placement of actions in mobile dialogs (ux)

Decision button placement in mobile dialog:
Actions to cancel or to proceed are placed on the top of the dialog and any further actions are placed on the bottom.

👤 Your name

DR

🧢 Your Product/Team

SLDS