chore: do not handle insufficent balance error if error data is not a…

[montycheese]

…vailable

Summary

1. Do not provide custom error handling on insufficient balance errors for sub account if error data is not available. This is the case if wallet_sendCalls is invoked without the funding capability.
2. renamed spend limits -> spend permissions in a place that was missed during the renaming refactor

How did you test your changes?

unit test coverage

[cb-heimdall]

✅ Heimdall Review Status

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