Improve test/js-native-api/test_bigint/test.js

[mpark86]

Replace assert.throws with common.expectsError in test/js-native-api/test_bigint/test.js.

[lundibundi]

@mpark86 ping, did you perhaps forgot to open a PR?
(Also, PTAL https://github.com/nodejs/node/blob/master/doc/guides/contributing/pull-requests.md#commit-message-guidelines for commit message guidelines)

[yorkie]

Add a direct PR link: master...mpark86:issue-30185 :p

[targos]

I'm closing this because of the lack of response. Feel free to open a pull request directly if this is still relevant!