Fix: resolves browser test failures on Mac

[allison-truhlar]

Addresses issue #627.

• Adds playwright as a dependency; removes webdriverio.
• Configures Vitest to use playwright as the browser provider rather than webdriverio.
• Adds npx playwright install to the test and test:watch commands in package.json. This is to ensure playwright updates after the initial install, to avoid getting the error Error: browserType.launch, followed the by the instructions: "Looks like Playwright Test or Playwright was just installed or updated. Please run the following command to download new browsers: npx playwright install.

All tests pass in macOS 14.5 using this configuration.

I haven't completed the Google CLA yet - I am opening this as a draft as I wait for instructions on how to complete it at Janelia.

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[allison-truhlar]

Closing this pull request to redo the commits with the correct email address associated for the CLA.

[jbms]

FYI you can always just force push to the same branch without creating a new pull request