fix: fix Open Notificaties in Docker Compose setup

[edgarvonk]

Fix OpenNotificaties in Docker Compose setup for local testing. Includes a workaround for initialising the 'ZAC abonnement' in the OpenNotificaties database until OpenNotificaties support setting the client_id field in the YAML-based setup configuration.

Solves PZ-5591

[github-actions]

unit-test-results

 85 files  ±0  123 suites  ±0   1m 45s ⏱️ -1s
474 tests ±0  473 ✅ ±0  1 💤 ±0  0 ❌ ±0 
577 runs  ±0  575 ✅ ±0  2 💤 ±0  0 ❌ ±0 

Results for commit 86e11f8. ± Comparison against base commit baf4bfe.

[github-actions]

integration-test-results

 31 files  ±0   31 suites  ±0   40s ⏱️ ±0s
114 tests ±0  114 ✅ ±0  0 💤 ±0  0 ❌ ±0 
127 runs  ±0  127 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 86e11f8. ± Comparison against base commit baf4bfe.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 42.16%. Comparing base (baf4bfe) to head (86e11f8).
Report is 3 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##               main    #2780    +/-   ##
==========================================
  Coverage     42.16%   42.16%            
  Complexity     3476     3476            
==========================================
  Files          1336     1336            
  Lines         32271    32271            
  Branches       3046     3045     -1     
==========================================
  Hits          13608    13608            
- Misses        17440    17842   +402     
+ Partials       1223      821   -402     

Flag	Coverage Δ
integrationtests	51.38% <ø> (ø)
unittests	28.14% <ø> (ø)

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