Fix #11428: Add tags and meta config to exposures

[aranke]

Resolves #11428

Problem

meta and tags specified in dbt_project.yml weren't flowing down to the exposure

Solution

Combine meta and tags between global config in dbt_project.yml and local config in properties.yml.

Checklist

• I have read the contributing guide and understand what's expected of me.
• I have run this code in development, and it appears to resolve the stated issue.
• This PR includes tests, or tests are not required or relevant for this PR.
• This PR has no interface changes (e.g., macros, CLI, logs, JSON artifacts, config files, adapter interface, etc.) or this PR has already received feedback and approval from Product or DX.
• This PR includes type annotations for new and modified functions.

[github-actions]

Additional Artifact Review Required

Changes to artifact directory files requires at least 2 approvals from core team members.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.81%. Comparing base (a5ec58d) to head (a820f0b).
Report is 1 commits behind head on main.

❌ Your patch status has failed because the patch coverage (33.33%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #11589      +/-   ##
==========================================
- Coverage   88.83%   88.81%   -0.03%     
==========================================
  Files         197      197              
  Lines       24784    24790       +6     
==========================================
- Hits        22018    22016       -2     
- Misses       2766     2774       +8     

Flag	Coverage Δ
integration	85.81% <100.00%> (-0.03%)	⬇️
unit	62.85% <33.33%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
Unit Tests	62.85% <33.33%> (-0.01%)	⬇️
Integration Tests	85.81% <100.00%> (-0.03%)	⬇️

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[QMalcolm]