fix: Reduce Sentry noise from dbt workspace not setup errors

[sentry]

This PR addresses the issue where HttpError: dbt workspace not setup was being logged as an error in Sentry, causing unnecessary noise. This error occurs when an organization does not have a dbt workspace configured, which is an expected condition, not an actual error.

Changes made:

• Added an early if not org.dbt: return "Not available" guard to both get_dbt_version() and get_edr_version() functions in ddpui/ddpdbt/elementary_service.py. This prevents DbtProjectManager.gather_dbt_project_params() from being called with a None org.dbt and thus avoids the HttpError entirely for unconfigured dbt workspaces.
• Downgraded the log level from logger.error to logger.info in the exception handling blocks of both get_dbt_version() and get_edr_version(). This ensures that any other unexpected exceptions in these functions are logged at a less critical level, further reducing Sentry noise for non-critical issues.

Fixes DALGO-BACKEND-2HJ

[sentry]

Codecov Report

❌ Patch coverage is 33.33333% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 59.59%. Comparing base (3347e59) to head (a5b4870).

Files with missing lines	Patch %	Lines
ddpui/ddpdbt/elementary_service.py	33.33%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1401      +/-   ##
==========================================
- Coverage   59.59%   59.59%   -0.01%     
==========================================
  Files         138      138              
  Lines       16561    16565       +4     
==========================================
+ Hits         9870     9872       +2     
- Misses       6691     6693       +2     

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