chore: add retry default comments and fix misconfig default

[marandaneto]

Problem

There was a mismatch of the default retry timeout depending on the code path.

Changes

Release info Sub-libraries affected

Bump level

• [ ] Major
• [ ] Minor
• [ ] Patch

Libraries affected

• [X] All of them
• [ ] posthog-web
• [ ] posthog-node
• [ ] posthog-react-native

Changelog notes

• Added support for X

[github-actions[bot]]

Size Change: 0 B 🆕

Total Size: 0 B

_{compressed-size-action}

[neilkakkar]

Will follow up with custom defaults for flags as well 👍