Hook ObservabilityBuilder to use new configuration provider

[fpfp100]

Hook ObservabilityBuilder to use new configuration provider.
The configuration for PerRequestProcessor is in separated PR.

[Copilot]

Pull request overview

Adds first-class support for supplying an IConfigurationProvider<ObservabilityConfiguration> to ObservabilityBuilder (and threading it into exporter/logger configuration), enabling configuration overrides without relying solely on environment variables.

Changes:

• Add configProvider support to ObservabilityBuilder (builder option + chaining method) and pass it through to Agent365ExporterOptions and DefaultLogger.
• Thread configProvider from ObservabilityManager.start() into the builder.
• Expand unit tests to validate provider-overrides for exporter toggles/domain overrides and builder plumbing.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/observability/tracing/exporter-utils.test.ts	Adds test coverage to ensure exporter util toggles honor an explicit configProvider override.
tests/observability/core/observabilityBuilder-configProvider.test.ts	New tests validating builder chaining, exporter options propagation, and logger selection behavior with configProvider.
packages/agents-a365-observability/src/tracing/exporter/Agent365ExporterOptions.ts	Extends exporter options with optional configProvider for observability configuration lookups.
packages/agents-a365-observability/src/tracing/exporter/Agent365Exporter.ts	Uses the provided configProvider when resolving custom domain and domain override behavior.
packages/agents-a365-observability/src/ObservabilityManager.ts	Passes configProvider from start() options into the builder.
packages/agents-a365-observability/src/ObservabilityBuilder.ts	Adds withConfigurationProvider() and threads the provider into exporter enablement checks, exporter options, and default logger construction.

[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.