Print simulator boot status output for diagnostic visibility

[Copilot]

Note

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Description of Change

The WaitForSimulatorReady method captures simctl bootstatus output but discards it. When simulator boot fails in CI, we have no visibility into why.

Changes:

• Added TestContext.WriteLine to print boot status output when exitCode != 0
• Output appears in test logs for troubleshooting boot failures

var output = ToolRunner.Run(XCRunTool, $"simctl bootstatus {udid}", out int exitCode, timeoutInSeconds: 10);
if (exitCode == 0)
    return true;

// Print diagnostic output to help troubleshoot boot issues
TestContext.WriteLine($"Simulator not ready yet: {output}");

Issues Fixed

Addresses feedback from #33047

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