RED-289: Rainbowkit used in GUI is very outdated on 1.0.7 latest is 2.1.6

[dnlbui]

https://linear.app/shm/issue/RED-289/[new-validator-design]-rainbowkit-used-in-gui-is-very-outdated-on-107

resources used:
https://www.rainbowkit.com/docs/migration-guide
https://wagmi.sh/react/guides/migrate-from-v1-to-v2#updated-createconfig-parameters
https://viem.sh/docs/migration-guide.html#_2-x-x-breaking-changes

Summary:
This PR updates related dependencies to rainbowkit upgrade to their latest versions, for compatibility and removing deprecated functions. The changes have been tested locally + w/ WaterNet Dashboard installer and are confirmed to work as expected.

Context:

• The version of rainbowkit used for connecting wallets was outdated.
• wagmi and related dependencies needed updates due to deprecations and compatibility issues.
• tanstack dependencies were required for compilation.

---

Changes Made:

1. Dependency Updates:

   • Updated @rainbow-me/rainbowkit from 1.0.7 to 2.1.6.
   • Added @tanstack/query-core version 5.56.2.
   • Added @tanstack/react-query version 5.56.2.
   • Updated viem from 1.3.0 to 2.21.9.
   • Updated wagmi from 1.3.9 to 2.12.12.

2. Code Adjustments:

   • Modified imports and configurations to align with the updated wagmi and rainbowkit versions.
   • Removed deprecated functions and replaced them with updated implementations.

3. Testing:

   • Tested locally and verified functionality with the dashboard.
   • Tested using waternet dashboard installer by switching to GUI feature branch after install.
   • Ensured that staking, unstaking, and login/logout work without issues.