Yevhenii Solomchenko d5b5b05984 sdk/metric: Apply Cardinality Limits to Aggregations (#7081) ...

Fixes https://github.com/open-telemetry/opentelemetry-go/issues/6977
Towards https://github.com/open-telemetry/opentelemetry-go/issues/6887

## What

- Cardinality limits are enforced during aggregation.
- Exceeding the limit results in dropping excess data or other specified
behavior.
- Performance benchmarks confirm no significant degradation due to the
limit enforcement.

## Notes
Tests will be added in a separate PR, as mentioned in
https://github.com/open-telemetry/opentelemetry-go/issues/6978

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Co-authored-by: Damien Mathieu <42@dmathieu.com>
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>

2025-08-04 09:13:21 -07:00

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