test: stabilize records and streams integration tests

[evertoncolling]

Description

Fix cross-run contamination in the upsert test by scoping queries to each batch. Harden cleanup, stream creation races, consistency polling, and sync pagination with a cursor captured before ingestion.

Checklist:

• Tests added/updated.
• Documentation updated (test docstrings; no public API changes).
• The PR title follows the Conventional Commit spec.

[gemini-code-assist]

Code Review

This pull request refactors the data modeling records integration tests to improve robustness against eventual consistency delays and slow CI environments. Key changes include updating assert_eventually to use a deadline-based timeout, introducing a RecordBatch dataclass to track stable cursors and filters, and adding comprehensive unit tests for these integration helpers. Feedback suggests using getattr with a fallback when retrieving the name of the assertion callable in assert_eventually to prevent potential AttributeError crashes.

[codecov]

Codecov Report

❌ Patch coverage is 82.85714% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 93.09%. Comparing base (298b46c) to head (dc3bbf4).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
...ration/test_api/test_data_modeling/test_records.py	80.32%	12 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2816      +/-   ##
==========================================
- Coverage   93.15%   93.09%   -0.06%     
==========================================
  Files         516      516              
  Lines       53665    53722      +57     
==========================================
+ Hits        49993    50014      +21     
- Misses       3672     3708      +36     

Files with missing lines	Coverage Δ
...s_unit/test_api/test_data_modeling/test_records.py	100.00% <100.00%> (ø)
...ration/test_api/test_data_modeling/test_records.py	90.62% <80.32%> (-8.52%)	⬇️

... and 11 files with indirect coverage changes

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[haakonvt]

Lets not create dataclasses purely for testing purposes

Edit: maybe this is fine, but please rename to include "test"

[evertoncolling]

Addressed in dc3bbf4

[haakonvt]

🦄 🤞