feat(types): Implement .IsGT for types.Coin

[DongLieu]

Description

Closes: #23781
backport

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Author Checklist

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I have...

• included the correct type prefix in the PR title, you can find examples of the prefixes below:
• confirmed ! in the type prefix if API or client breaking change
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• provided a link to the relevant issue or specification
• reviewed "Files changed" and left comments if necessary
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• confirmed the correct type prefix in the PR title
• confirmed all author checklist items have been addressed
• reviewed state machine logic, API design and naming, documentation is accurate, tests and test coverage

[aljo242]

lgtm would just like some formatting

[aljo242]

just some cleanup for the testing but lgtm

[technicallyty]

going to block this until we revert back to the panic

[technicallyty]

LGTM. thanks!