chore: Add support for ESM in jest

[gethinwebster]

Description

Adjust NodeJS config so that jest tests can cope with ESM (see https://jestjs.io/docs/ecmascript-modules). This is so that we can upgrade webdriverio, which is distributed as ESM in recent versions.

Related links, issue #, if available: AWSUI-51276

How has this been tested?

Tested in local workspace with upgraded version of webdriverio (cloudscape-design/browser-test-tools#86)

Review checklist

The following items are to be evaluated by the author(s) and the reviewer(s).

Correctness

• Changes include appropriate documentation updates.
• Changes are backward-compatible if not indicated, see CONTRIBUTING.md.
• Changes do not include unsupported browser features, see CONTRIBUTING.md.
• Changes were manually tested for accessibility, see accessibility guidelines.

Security

• If the code handles URLs: all URLs are validated through the checkSafeUrl function.

Testing

• Changes are covered with new/existing unit tests?
• Changes are covered with new/existing integration tests?

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.80%. Comparing base (df2a8b4) to head (2c5a0d5).
Report is 8 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2606   +/-   ##
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  Coverage   95.80%   95.80%           
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  Files         742      743    +1     
  Lines       20320    20335   +15     
  Branches     6859     6923   +64     
=======================================
+ Hits        19467    19482   +15     
  Misses        797      797           
  Partials       56       56           

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[just-boris]

I already added this flag before:

components/build-tools/tasks/unit.js

Lines 19 to 23 in a35b753

	runJest('build-tools', 'jest.build-tools.config.js', 'build-tools/**/__tests__/*.test.js', {
	// stylelint rules require ESM
	// https://stylelint.io/migration-guide/to-16#jest-preset-stylelint
	NODE_OPTIONS: '--experimental-vm-modules',
	}),

How about doing the same way here, so even when running npx gulp ... it still sets the expected options?

Also, I am not sure this line in our contributing docs will remain working:

components/CONTRIBUTING.md

Lines 155 to 156 in a35b753

	# Run all input integration tests
	npx jest -c jest.integ.config.js src/input

[gethinwebster]

Nice approach, thanks. Updated the docs too.