Existing db tests failing

[cosenal]

When running export METRIQ_MODE='TESTING'; npm run test from the metriq-api folder, the command yields the following result:

Tests:       30 failed, 3 passed, 33 total

The assignee can decide whether to fix or to deprecate those tests.

The tests are in https://github.com/unitaryfoundation/metriq-api/tree/main/metriq-api/coverage