[HOTFIX] Prevent login failure when external OSM/OhSome stats fetch returns 429

[ramyaragupathy]

Current implementation of user stats fetching during login raises an exception if the external OSM or OhSome API returns a 429 Too Many Requests error. This is currently blocking users from logging into the platform.

Proposed Solution: Merge PR #7187 which:

• Returns an empty stats object instead of crashing.

• Increases log verbosity to capture the error details.

[linear]

TECH-1020

[prabinoid]

The stats update calls https://www.openstreetmap.org/api/0.6/user/{user_id}.json which is currently being blocked with 429 Too many requests which needs be passed in order to fetch and update the stats and upgrade the badges and mapping level.

[ramyaragupathy]

Fixed through #7187 and https://github.com/hotosm/tasking-manager/releases/tag/v5.5.1