Migration - BouncyCastle Fallback

[0xFirekeeper]

PR-Codex overview

This PR enhances the SignOutAsync method in the EmbeddedWallet.Misc.cs file by adding a fallback encryption mechanism using BouncyCastle when the initial AES encryption fails.

Detailed summary

• Added using statements for BouncyCastle cryptography classes.
• Implemented a fallback encryption method using BouncyCastle's AesEngine and PaddedBufferedBlockCipher.
• Replaced the original exception handling to include a new catch block for migration failure.

✨ Ask PR-Codex anything about this PR by commenting with /codex {your question}

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.20%. Comparing base (65107c5) to head (c6a99a7).

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #92      +/-   ##
==========================================
+ Coverage   78.17%   78.20%   +0.02%     
==========================================
  Files          28       28              
  Lines        4358     4358              
  Branches      610      610              
==========================================
+ Hits         3407     3408       +1     
  Misses        787      787              
+ Partials      164      163       -1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[0xFirekeeper]

Too risky to use two algorithms here