feat(Surveys): Enable partial survey responses

[Phanatic]

Changes

This PR enables the SDK to send partial survey responses as users fill out the survey, not at the end once all questions are answered : PostHog/posthog#19300
We introduced a new config option called disable_survey_partial_response which is true by default. Customers have to set this to false to get the feature enabled

Not supported

• Continuing filling out a survey after a browser session refresh. We will send question responses as they are answered, and don't allow you to fill out a few questions, come back later, and then fill them out.

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!)

[vercel]

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Name	Status	Preview	Updated (UTC)
posthog-js	❌ Failed (Inspect)		Dec 20, 2024 5:16pm

[posthog-bot]

This PR hasn't seen activity in a week! Should it be merged, closed, or further worked on? If you want to keep it open, post a comment or remove the stale label – otherwise this will be closed in another week.

[ioannisj]

I imagine this needs changes BE side as well to handle survey_response_id payload? Also, CI is failing, no idea how to address this

[posthog-bot]

This PR hasn't seen activity in a week! Should it be merged, closed, or further worked on? If you want to keep it open, post a comment or remove the stale label – otherwise this will be closed in another week.