Various application crash and bug fixes 🐛

[vikinatora]

Description

Introducing several bug fixes which sometimes caused the application to crash. They include:

1. Added 2 additional stores
   • Loading store was missing and causing the app to crash
   • Added nftCheckoutStore in order to be consistent with the new store design and limit the uses of Context API
2. Fixed wrong property mapping in SummaryTab which caused signer to be mapped to the user's address
3. Fixed random color flickering issue when the collection doesn't have an image on SummaryTab
4. Fixed highest offer sometimes showing undefined when address is available
5. Added query invalidation to MakeOfferPopup
6. Fixed crash in useStickyHeader

The PR can be reviewed in a more readable and understandable way if you review each commit separately

Related Issue

Motivation and Context

How Has This Been Tested?

Something you're not sure about (if appropriate):

Screenshots (if appropriate):

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)

Checklist:

• [x] I have read the CONTRIBUTING document.

• [x] My code follows the code style of this project.