fix(records): validate aggregate and filter container shapes

[andersfylling]

aggregates is a mapping of the aggregate IDs you choose to aggregates, and a Filters aggregate takes a sequence. Passing an aggregate directly, or a list of them, is silently serialized into a body the API cannot make sense of:

client.data_modeling.records.aggregate(Count(), stream_id=STREAM_ID)
# sends {"aggregates": {"count": {}}} - "count" read as a client-defined ID

UniqueValues(path, aggregates=[Count()])   # aggregates as a list, sent as-is
Filters(filters=filters.MatchAll())        # TypeError: 'MatchAll' object is not iterable

Both shapes are now validated where they are taken — the top-level aggregates argument, the nested aggregates of every bucket aggregate, and Filters.filters — with a TypeError that shows the expected shape.

First commit is the failing tests, second is the fix.

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[codecov]

Codecov Report

❌ Patch coverage is 95.34884% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 93.76%. Comparing base (629c506) to head (43767b1).

Files with missing lines	Patch %	Lines
...te/client/data_classes/data_modeling/aggregates.py	91.66%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2748      +/-   ##
==========================================
- Coverage   93.79%   93.76%   -0.03%     
==========================================
  Files         513      513              
  Lines       52445    52481      +36     
==========================================
+ Hits        49189    49210      +21     
- Misses       3256     3271      +15     

Files with missing lines	Coverage Δ
cognite/client/_api/data_modeling/records.py	97.53% <100.00%> (ø)
cognite/client/_sync_api/data_modeling/records.py	100.00% <ø> (ø)
...s_unit/test_api/test_data_modeling/test_records.py	100.00% <100.00%> (ø)
...t_data_classes/test_data_models/test_aggregates.py	100.00% <100.00%> (ø)
...te/client/data_classes/data_modeling/aggregates.py	98.89% <91.66%> (-0.72%)	⬇️

... and 4 files with indirect coverage changes

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[gemini-code-assist]

Code Review

This pull request introduces validation for the aggregates and filters arguments in the data modeling API and data classes. Specifically, it adds _validate_aggregates and _validate_filters helper functions to ensure that aggregates are passed as mappings and filters as sequences, raising appropriate TypeErrors with helpful hints otherwise. Unit tests have been added to verify these validations. There are no review comments, and I have no feedback to provide.