chore: Refactor all widgets to have common default loading widget

[divyanshub024]

Description

Refactor all widgets so they use a common default loading widget. This will improve consistency in UI behavior during loading states and make it easier to update loading styles in the future.

Requirements

• No functional changes to the code

[Shonu72]

HI @divyanshub024, I'd like to work on this please assign to me