fix(flags): support multiple children prop in PostHogFeature

[havenbarnes]

Changes

Closes PostHog/posthog#22922

Checklist

• Tests for new code (see advice on the tests we use)
• Accounted for the impact of any changes across different browsers
• Accounted for backwards compatibility of any changes (no breaking changes in posthog-js!)

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[havenbarnes]

@neilkakkar hello! I see you looked at this ticket a bit when it first came in - would love your thoughts on this when you get back.

Would we prefer a non-backwards compat change like this, or perhaps split brained logic that removes the wrapper div only if multiple children are passed in?

My opinion was to prefer the former just to keep the behavior simpler for SDK users, but I could see some arguments for the latter if we know of any use case for the wrapper div that make this change problematic

Edit: I thought of a way to keep this generally backwards compatible

[github-actions]

Size Change: 0 B

Total Size: 3.01 MB

ℹ️ View Unchanged

Filename	Size
dist/all-external-dependencies.js	193 kB
dist/array.full.es5.js	251 kB
dist/array.full.js	342 kB
dist/array.full.no-external.js	341 kB
dist/array.js	168 kB
dist/array.no-external.js	167 kB
dist/dead-clicks-autocapture.js	12.8 kB
dist/exception-autocapture.js	8.8 kB
dist/external-scripts-loader.js	2.19 kB
dist/main.js	169 kB
dist/module.full.js	342 kB
dist/module.full.no-external.js	341 kB
dist/module.js	168 kB
dist/module.no-external.js	167 kB
dist/recorder-v2.js	102 kB
dist/recorder.js	103 kB
dist/surveys-preview.js	56.7 kB
dist/surveys.js	62.1 kB
dist/tracing-headers.js	1.33 kB
dist/web-vitals.js	10.3 kB

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[dmarticus]

this seems cool to me; nice work! Don't forget to the add the bump: $version label to this PR to automatically bump and publish the latest version of these changes once they've been merged.