Fix a config bug with activity_type item not containing a report block.

[caarmen]

• Create a test to reproduce the bug.
• Fix the bug by falling back to the default report configuration.

[github-actions]

File	Coverage
All files	97%	✅
logger.py	91%	✅
main.py	97%	✅
settings.py	95%	✅
data/database/connection.py	58%	❌
domain/localrepository/localwithingsrepository.py	94%	✅
domain/usecases/slack/usecase_post_daily_activity.py	95%	✅
domain/usecases/slack/usecase_post_sleep.py	97%	✅
remoteservices/api/withings/subscribeapi.py	87%	✅
remoteservices/api/withings/weightapi.py	95%	✅
remoteservices/repositories/webapifitbitrepository.py	97%	✅
routers/dependencies.py	85%	✅
tasks/fitbitpoll.py	95%	✅
tasks/post_daily_activities_task.py	92%	✅

Minimum allowed coverage is 80%

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