[ENG-3307] fix: use isInitialLoading so skeleton loader shows only if query is e…

[teebszet]

…nabled

🔘 PR Type

• Bugfix

📜 Background

https://linear.app/xverseapp/issue/ENG-3307/for-ledger-users-who-havent-activated-stx-yet-they-see-a-skeleton

🔄 Changes

• fix: should use isInitialLoading to display skeleton loader only if query is loading and fetching first time (not disabled)

Impact:

• nfts tab and inscriptions tab only

🖼 Screenshot / 📹 Video

✅ Review checklist

Please ensure the following are true before merging:

• Code Style is consistent with the project guidelines.
• Code is readable and well-commented.
• No unnecessary or debugging code has been added.
• Security considerations have been taken into account.
• The change has been manually tested and works as expected.
• Breaking changes and their impacts have been considered and documented.
• Code does not introduce new technical debt or issues.

[github-actions]

Test with build here: https://github.com/secretkeylabs/xverse-web-extension/actions/runs/7007422300

[DuskaT021]

@teebszet tested 👍