[Benchmark X64] [Copilot] Port alternation switch optimization from source g ...

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Job completed in 14 minutes 53 seconds (remote runner delay: 59 seconds).
dotnet/runtime#122959
Using arguments: benchmark Regex https://github.com/MihaZupan/performance/tree/compiled-regex-only -medium
Main commit: dotnet/runtime@b19edc0
PR commit: dotnet/runtime@03e7c36

ERROR: System.Exception: /usr/lib/dotnet/dotnet run -c Release --framework net10.0 -- --filter *Regex* -h Job StdDev RatioSD Median Min Max OutlierMode MemoryRandomization Gen0 Gen1 Gen2 --corerun "/ramdisk/artifacts-main/corerun" "/ramdisk/artifacts-pr/corerun"  failed with exit code 1
   at Runner.JobBase.RunProcessAsync(String fileName, String arguments, List`1 output, String logPrefix, String workDir, Boolean checkExitCode, Func`2 processLogs, Boolean suppressOutputLogs, Boolean suppressStartingLog, ProcessPriorityClass priority, List`1 envVars, CancellationToken cancellationToken) in /home/runtime-utils/Runner/JobBase.cs:line 472
   at Runner.Jobs.BenchmarkLibrariesJob.RunBenchmarksAsync(String[] coreRunPaths) in /home/runtime-utils/Runner/Jobs/BenchmarkLibrariesJob.cs:line 254
   at Runner.Jobs.BenchmarkLibrariesJob.RunJobCoreAsync() in /home/runtime-utils/Runner/Jobs/BenchmarkLibrariesJob.cs:line 73
   at Runner.JobBase.RunJobAsync() in /home/runtime-utils/Runner/JobBase.cs:line 164

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#1756