Signtool telemetry fails for Linux files in release pipeline

- [ ] This issue is blocking
- [x] This issue is causing unreasonable pain

Signtool telemetry errors after signing linux files in release pipeline.

This is the error

```

D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: The "Microsoft.DotNet.SignTool.SignToolTask" task failed unexpectedly.
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: System.TypeInitializationException: The type initializer for 'Microsoft.ApplicationInsights.Extensibility.Implementation.Tracing.CoreEventSource' threw an exception.
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: ---> System.NullReferenceException: Object reference not set to an instance of an object.
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at System.Diagnostics.Tracing.CounterGroup.OnEventSourceCommand(Object sender, EventCommandEventArgs e)
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at System.Diagnostics.Tracing.EventSource.add_EventCommandExecuted(EventHandler`1 value)
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at System.Diagnostics.Tracing.CounterGroup.RegisterCommandCallback()
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at System.Diagnostics.Tracing.CounterGroup..ctor(EventSource eventSource)
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at System.Diagnostics.Tracing.CounterGroup.GetCounterGroup(EventSource eventSource)
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at System.Diagnostics.Tracing.DiagnosticCounter.Publish()
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at System.Diagnostics.Tracing.EventCounter..ctor(String name, EventSource eventSource)
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at Microsoft.ApplicationInsights.Extensibility.Implementation.Tracing.CoreEventSource..ctor()
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at Microsoft.ApplicationInsights.Extensibility.Implementation.Tracing.CoreEventSource..cctor()
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: --- End of inner exception stack trace ---
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at Microsoft.ApplicationInsights.Extensibility.Implementation.Tracing.CoreEventSource.get_IsVerboseEnabled()
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at Microsoft.ApplicationInsights.Channel.InMemoryChannel.Send(ITelemetry item)
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at Microsoft.ApplicationInsights.Extensibility.Implementation.TransmissionProcessor.Process(ITelemetry item)
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at Microsoft.ApplicationInsights.Extensibility.Implementation.TelemetryProcessorChain.Process(ITelemetry item)
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at Microsoft.ApplicationInsights.Extensibility.TelemetrySink.Process(ITelemetry item)
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at Microsoft.ApplicationInsights.Shared.Extensibility.Implementation.PassThroughProcessor.Process(ITelemetry item)
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at Microsoft.ApplicationInsights.Extensibility.Implementation.TelemetryProcessorChain.Process(ITelemetry item)
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at Microsoft.ApplicationInsights.TelemetryClient.Track(ITelemetry telemetry)
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at Microsoft.ApplicationInsights.TelemetryClient.TrackEvent(EventTelemetry telemetry)
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at Microsoft.ApplicationInsights.TelemetryClient.TrackEvent(String eventName, IDictionary`2 properties, IDictionary`2 metrics)
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at Microsoft.DotNet.SignTool.Telemetry.SendEvents() in /_/src/Microsoft.DotNet.SignTool/src/Telemetry.cs:line 40
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at Microsoft.DotNet.SignTool.SignToolTask.ExecuteImpl() in /_/src/Microsoft.DotNet.SignTool/src/SignToolTask.cs:line 266
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at Microsoft.DotNet.SignTool.SignToolTask.Execute() in /_/src/Microsoft.DotNet.SignTool/src/SignToolTask.cs:line 154
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
D:\workspace\_work\1\s\src\Microsoft.DotNet.Release\Microsoft.DotNet.Signing.Extensions\SignLinuxPackages.proj(37,9): error MSB4018: --- End of stack trace from previous location ---
```

this is sample build -> https://dev.azure.com/dnceng/internal/_build/results?buildId=1227813&view=logs&j=d7f318d2-3658-5f56-29df-16b211ec56a6&t=7851342b-b7f6-561e-0dbe-e63708dfa83e

Versions :

SignToolVersion : 6.0.0-beta.21357.3
FeedsTaskVersion : 6.0.0-beta.21357.3

cc: @adiaaida @jonfortescue @markwilkie @chcosta