[tvOS] System.Diagnostics.TraceSource.Config.Tests failing

[simonrozsival]

Originally reported in #74076
Most likely introduced in #73087
Sample test results: https://dev.azure.com/dnceng/public/_build/results?buildId=1948701&view=results

Exception which causes the failures:

System.UnauthorizedAccessException : Access to the path '/private/var/containers/Bundle/Application/C051ED5D-1DCA-43F6-B41B-04A9592B3F5F/System.Diagnostics.TraceSource.Config.Tests.app/AppleTestRunner.dll.config' is denied.
---- System.IO.IOException : Operation not permitted
   at Interop.ThrowExceptionForIoErrno(ErrorInfo errorInfo, String path, Boolean isDirError)
   at Microsoft.Win32.SafeHandles.SafeFileHandle.Open(String path, OpenFlags flags, Int32 mode, Func`4 createOpenException)
   at Microsoft.Win32.SafeHandles.SafeFileHandle.Open(String fullPath, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize, UnixFileMode openPermissions, Int64& fileLength, UnixFileMode& filePermissions, Func`4 createOpenException)
   at Microsoft.Win32.SafeHandles.SafeFileHandle.Open(String fullPath, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize, Nullable`1 unixCreateMode, Func`4 createOpenException)
   at System.IO.FileSystem.CopyFile(String sourceFullPath, String destFullPath, Boolean overwrite)
   at System.IO.File.Copy(String sourceFileName, String destFileName, Boolean overwrite)
   at System.Diagnostics.TraceSourceConfigTests.ConfigurationTests.CreateAndLoadConfigFile(String filename)
   at System.Diagnostics.TraceSourceConfigTests.ConfigurationTests.Refresh_ChangeSwitch()
   at System.Reflection.MethodInvoker.InterpretedInvoke(Object obj, Span`1 args, BindingFlags invokeAttr)
----- Inner Stack Trace -----

[ghost]

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Issue Details

---

Originally reported in #74076
Most likely introduced in #73087
Sample test results: https://dev.azure.com/dnceng/public/_build/results?buildId=1948701&view=results

Author:	simonrozsival
Assignees:	-
Labels:	disabled-test, os-tvos, area-System.Diagnostics.TraceSource
Milestone:	-

[danmoseley]

Test logs are deleted after not very long. It is best to paste in the useful parts into issues like this.

[akoeplinger]

We can't write to the app location in tvOS, we'll need to use the temp path here.