Fee subsidy modal styles

[fairlighteth]

Summary

• Style enhancements for the fee subsidy modal
• Fixes issue Mobile: Remove blurred effect from the CoWmunity fee discount modal  #2560
• Fixes issue Mobile: Fee discount tooltip overlaps Fee CoWmunity modal #2561
• Disables onClick for the tooltip (i) icon. Instead keeps it as a normal tooltip hover.
• COW icon replaced with the most recent SVG version (updated anywhere where Component CowProtocolLogo is imported).
• The X close in the modal has been made more modular for re-use purposes.

Current

New

Screen.Recording.2022-03-24.at.16.09.57.mov

New: Mobile

New: Desktop => Light Mode

[github-actions]

• 🔭 GP Swap: CoW Protocol v2 Swap UI

[elena-zh]

Hey @fairlighteth , great changes!

Some minor issues:

1. The table has square boarders in iOS 15.3
   
   

2. Might be considered as a nitpick, but it seems that the highlighting exceeds the boarders of the table. Is it done intentionally?
   

[elena-zh]

3. Also, when highlighted, there is no boarder between columns
   

[elena-zh]

I noticed that the modal is displayed at the bottom of the screen in iPad mini with iOS 15.3.1 in Safari browser in the portrait mode

[elena-zh]

@fairlighteth , changes LGTM now.
Thank you!