fix(minor-ampd): multisig handler supports multiple key types

[haiyizxx]

Description

Todos

• [ ] Unit tests
• [ ] Manual tests
• [ ] Documentation
• [ ] Connect epics/issues

Steps to Test

Expected Behaviour

Other Notes

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 93.43%. Comparing base (f76dc8a) to head (25a0549).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #504 +/- ## ======================================= Coverage 93.43% 93.43% ======================================= Files 182 182 Lines 25035 25041 +6 ======================================= + Hits 23392 23398 +6 Misses 1643 1643 ```

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