Payload decoding fails on large decimal number

[mjameswh]

Describe the bug

A workflow's history contains some JSON payload (json/plain) and some field inside that payload is a decimal number of at least 15 characters. When inspecting that workflow in UI, the payload does not get decoded, and a warning message is displayed in the browser console, such as:

Could not parse payload:  SyntaxError: Cannot convert 0.2345678901234568 to a BigInt (at parse-with-big-int-f9a90488.js)

To Reproduce

Run this workflow, then open that workflow's in UI:

async myWorkflow() {
  return { result: 0.2345678901234568 };
}

Additional context

This is due to a bug in json-bigint, which has been fixed months ago in that project's master branch. However, no NPM release has been published in years. Given that json-bigint is MIT licensed, it might make sense to fork it.