Describe your environment
otel-cpp: v1.12.0
Platform: macOS (but happens on others as well)

Steps to reproduce

• Create a DoubleUpDownCounter
• Add a negative value to it

What is the expected behavior?
The counter's value is decremented by the value.

What is the actual behavior?

[Warning] File: /Users/tim/Desktop/projects/opentelemetry-cpp/sdk/src/metrics/aggregation/sum_aggregation.cc:90  DoubleSumAggregation::Aggregate Negative value ignored for Monotonic increasing measurement. Value-374.1

Additional context
Attached is a patch for the metrics_simple example that exhibits the problem.

updown.patch