refactor(widget): replace spinner with dots-loader + small UI edits

[DarianM]

Changes include

Widget design updates such as

• dots-loader instead of spinner animation
• replace home icon
• close button element
• amount preset button styling
• payment details styling now follow selected theme
• open/close trigger button small styling update

[github-actions]

Deployment results

Worker	Alias	URL	Outcome
API	-	0ea9076c	success
CDN	-	8dfbdece	success
App	-	d49166e3	success

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Logs #23592571943

[sidvishnoi]

And did you run this design update through @RaduMedregan?

[DarianM]

And did you run this design update through @RaduMedregan?

Checking the design changes w/ @RaduMedregan and I find that there are a few more small design changes that need updates while at it