Automatically enable debug mode for posthog-js on SELF_CAPTURE

[paolodamico]

Changes

If SELF_CAPTURE = True (i.e. on local development instances), we automatically enable debug mode on posthog-js so that all events are logged to the console.

Checklist

• All querysets/queries filter by Organization, by Team, and by User
• Django backend tests
• Jest frontend tests
• Cypress end-to-end tests

[macobo]

Q: What's the goal of setting this though? What sort of insights are you looking for.

As for the typescript error - your change made another (ignored) error change locations. You'll need to either update .ts-strict-blacklist or fix it :)

[paolodamico]

The TS error has been addressed in the posthog-js library, so tests should now pass. The goal of this PR is that if you're running on development, you see all the posthog capture requests in your console. This can help test and debug event instrumentation.

[macobo]

Seems a bit noisy but sure.

[paolodamico]

Will merge and we can remove if we realize it's not helpful.