[SmartWallet] Fix SwitchNetwork from zksync stack to non zksync

[0xFirekeeper]

PR-Codex overview

This PR focuses on enhancing the SmartWallet functionality by improving contract initialization based on the entry point version and adding new test cases for multi-chain transactions.

Detailed summary

• Refactored contract initialization in SmartWallet.cs to use var for entryPointAbi and factoryAbi.
• Removed redundant contract creation calls.
• Added new test cases in Thirdweb.SmartWallet.Tests.cs for:
  • Multi-chain transaction success.
  • Multi-chain transaction from zk to non-zk.
  • Multi-chain transaction from non-zk to zk.

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.23%. Comparing base (777f232) to head (3264b91).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #106      +/-   ##
==========================================
+ Coverage   78.16%   78.23%   +0.06%     
==========================================
  Files          28       28              
  Lines        4488     4488              
  Branches      619      619              
==========================================
+ Hits         3508     3511       +3     
+ Misses        814      812       -2     
+ Partials      166      165       -1     

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