trim EventSource when System.Diagnostics.Tracing.EventSource.IsSupported is false

[pavelsavara]

ArrayPoolEventSource
BinaryFormatterEventSource
DataCommonEventSource
DependencyInjectionEventSource
DiagnosticSourceEventSource
FrameworkEventSource
HttpTelemetry
MetricsEventSource
NameResolutionTelemetry
NativeRuntimeEventSource
NetEventSource
NetSecurityTelemetry
OpenSslX509ChainEventSource
SocketsTelemetry
TplEventSource
XmlSerializationEventSource

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