Fix formatting

[Radhika Gupta (rads-1996)]

No description provided.

[github-actions]

Performance comparison

Threshold: regressions >15.0% on gating scenarios fail the build. Higher ops/s is better; positive Δ means the PR is slower.

Scenario	Gating	Baseline (ops/s)	Candidate (ops/s)	Δ %	Status
azure_monitor_log	yes	19,341.8	19,139.9	+1.06%	✅
azure_monitor_span	yes	156,201.2	154,273.4	+1.25%	✅
otel_log	no	22,649.0	22,389.9	+1.16%	✅
otel_span	no	38,974.2	38,822.9	+0.39%	✅

[Copilot]

Pull request overview

This PR applies formatting-only updates across several test modules and a few runtime modules, aligning code style with the repo’s configured formatter settings (e.g., Black with line-length = 120).

Changes:

• Rewrapped/condensed multiline expressions (list comprehensions, function calls, and assertions) for consistent formatting.
• Removed stray blank/whitespace-only lines in a couple of modules.
• Minor slice-spacing adjustment in token parsing logic.

Reviewed changes

Copilot reviewed 13 out of 14 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/a365/test_exporter.py	Reformats assertLogs context manager usage.
tests/a365/integration/openai/test_openai_trace_processor.py	Condenses model construction and some list comprehensions/conditionals for style consistency.
tests/a365/integration/openai/test_message_format.py	Reformats dict appends, list comprehensions, and assertion message formatting.
tests/a365/integration/langchain/test_observability_pipeline.py	Reformats assertions and list comprehensions.
tests/a365/integration/langchain/test_message_format.py	Condenses list comprehension and assertion formatting.
tests/a365/integration/agentframework/test_observability_pipeline.py	Reformats assertions and related formatting blocks.
tests/a365/integration/agentframework/test_message_format.py	Condenses helper/list comprehensions and assertion formatting.
tests/a365/integration/agentframework/test_agentframework_trace_processor.py	Condenses test function signature and conditional formatting.
src/microsoft/opentelemetry/a365/core/message_utils.py	Condenses list comprehension in message serialization.
src/microsoft/opentelemetry/a365/core/exporters/agent365_exporter.py	Adjusts slice formatting in Bearer token parsing.
src/microsoft/opentelemetry/_utils.py	Condenses a multi-line guard condition into a single line.
src/microsoft/opentelemetry/_sdkstats/_constants.py	Removes a stray whitespace-only line.
src/microsoft/opentelemetry/_otlp/handler.py	Removes a stray whitespace-only line.
src/microsoft/opentelemetry/_genai/_langchain/_tracer.py	Condenses a conditional assignment to a single line.

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