Rename EnablePerfCounters to EnablePerformanceCounters per API review

[harsimar]

Renamed across Exporter and AspNetCore source, tests, API listings, and changelogs.

Contributing to the Azure SDK

Please see our CONTRIBUTING.md if you are not familiar with contributing to this repository or have questions.

For specific information about pull request etiquette and best practices, see this section.

[Copilot]

Pull request overview

This PR renames the public option EnablePerfCounters to EnablePerformanceCounters across Azure Monitor OpenTelemetry Exporter and ASP.NET Core distro to align with the API review naming.

Changes:

• Renamed the options property and updated internal usage (StandardMetricsExtractionProcessor) and unit tests.
• Updated public API listings for all target frameworks.
• Updated changelog text to reflect the renamed option.

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
sdk/monitor/Azure.Monitor.OpenTelemetry.Exporter/tests/Azure.Monitor.OpenTelemetry.Exporter.Tests/StandardMetricTests.cs	Updates tests to use EnablePerformanceCounters.
sdk/monitor/Azure.Monitor.OpenTelemetry.Exporter/src/Internals/StandardMetricsExtractionProcessor.cs	Renames internal flag and adjusts conditional logic accordingly.
sdk/monitor/Azure.Monitor.OpenTelemetry.Exporter/src/AzureMonitorExporterOptions.cs	Renames the public exporter option property.
sdk/monitor/Azure.Monitor.OpenTelemetry.Exporter/api/Azure.Monitor.OpenTelemetry.Exporter.netstandard2.0.cs	Updates exporter API surface to new property name.
sdk/monitor/Azure.Monitor.OpenTelemetry.Exporter/api/Azure.Monitor.OpenTelemetry.Exporter.net8.0.cs	Updates exporter API surface to new property name.
sdk/monitor/Azure.Monitor.OpenTelemetry.Exporter/api/Azure.Monitor.OpenTelemetry.Exporter.net10.0.cs	Updates exporter API surface to new property name.
sdk/monitor/Azure.Monitor.OpenTelemetry.Exporter/CHANGELOG.md	Updates changelog mention of the option name.
sdk/monitor/Azure.Monitor.OpenTelemetry.AspNetCore/tests/Azure.Monitor.OpenTelemetry.AspNetCore.Tests/AzureMonitorOptionsTests.cs	Updates distro tests to use EnablePerformanceCounters.
sdk/monitor/Azure.Monitor.OpenTelemetry.AspNetCore/src/AzureMonitorOptions.cs	Renames the public distro option property and propagation into exporter options.
sdk/monitor/Azure.Monitor.OpenTelemetry.AspNetCore/api/Azure.Monitor.OpenTelemetry.AspNetCore.netstandard2.0.cs	Updates distro API surface to new property name.
sdk/monitor/Azure.Monitor.OpenTelemetry.AspNetCore/api/Azure.Monitor.OpenTelemetry.AspNetCore.net8.0.cs	Updates distro API surface to new property name.
sdk/monitor/Azure.Monitor.OpenTelemetry.AspNetCore/api/Azure.Monitor.OpenTelemetry.AspNetCore.net10.0.cs	Updates distro API surface to new property name.
sdk/monitor/Azure.Monitor.OpenTelemetry.AspNetCore/CHANGELOG.md	Updates changelog mention of the option name.