Btc bal2

[tkernell]

Summary

Handles a blockchain.info api error where tx block height is either non-existent or not an integer.

Steps Taken to QA Changes

Checklist

This pull request is:

• [X] A code fix
  • Please reference the related issue by including "Closes <link to issue>" in this Pull Request's summary section.
    • If no issue exists, please create a bug report issue
  • Please include tests. Fixes without tests will not be accepted unless it's related to the documentation only.
  • Please make sure docs are updated if need be

Happy engineering!

[0xSpuddy]

tested by tipping EVMBalance on Mumbai: https://mumbai.polygonscan.com/tx/0x1fcdd23de30c7b129a5d3af899676544b77f9a2cfcd59f03da71cf6d1386a4c8 telliot responded as expected: https://mumbai.polygonscan.com/tx/0x52affd6a61f8522e45b9943673594756b2930d94db6de3c204647663a791a732

btcBalance tip: https://mumbai.polygonscan.com/tx/0x1d3e3738808a8b5ab7215e1b97014e14a94501c72428f2212ba5dad70c03f88e telliot picked it up as expected: https://mumbai.polygonscan.com/tx/0x5216de34b76fe70dd3f69ba997d632de17f12be36e806227b027dc323309ace1

[0xSpuddy]

merged. next will be testing all the new features merged into main since the previous release (before making a new release.)