fix NPE with feature reporter not being available - #3199

Process completed with exit code 1.

In externally visible method 'IServiceCollection ApplicationInsightsExtensions.AddApplicationInsightsTelemetry(IServiceCollection services)', validate parameter 'services' is non-null before using it. If appropriate, throw an 'ArgumentNullException' when the argument is 'null'. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1062)

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

In externally visible method 'IServiceCollection ApplicationInsightsExtensions.AddApplicationInsightsTelemetryWorkerService(IServiceCollection services)', validate parameter 'services' is non-null before using it. If appropriate, throw an 'ArgumentNullException' when the argument is 'null'. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1062)

Call System.IDisposable.Dispose on object created by 'TelemetryConfiguration.CreateDefault()' before all references to it are out of scope (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca2000)

The type name TelemetryClient conflicts in whole or in part with the namespace name 'Microsoft.Identity.Client.TelemetryCore.TelemetryClient'. Change either name to eliminate the conflict. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1724)

The type name TelemetryClient conflicts in whole or in part with the namespace name 'Microsoft.Identity.Client.TelemetryCore.TelemetryClient'. Change either name to eliminate the conflict. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1724)

The type name TelemetryClient conflicts in whole or in part with the namespace name 'Microsoft.Identity.Client.TelemetryCore.TelemetryClient'. Change either name to eliminate the conflict. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1724)

The type name TelemetryClient conflicts in whole or in part with the namespace name 'Microsoft.Identity.Client.TelemetryCore.TelemetryClient'. Change either name to eliminate the conflict. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1724)