Backport gzip I/O retry logic and redirected-input console guard to release/10.0.4xx

[Copilot]

Two transient-failure paths from main (#53424) were missing from the servicing branch.

Changes

• GZipCompress.cs — replaces bare try/catch with a bounded retry loop (3 attempts, 200ms × attempt backoff) that retries only IOException, covering transient file locks from antivirus/indexers on CI machines:

  catch (IOException) when (attempt < MaxRetries)
  {
      Log.LogMessage(MessageImportance.Low,
          "Retrying compression of '{0}' (attempt {1}/{2}) due to transient I/O error.",
          file.ItemSpec, attempt, MaxRetries);
      Thread.Sleep(RetryDelayMs * attempt);
  }

• PhysicalConsole.cs — gates ListenToConsoleKeyPressAsync() behind !Console.IsInputRedirected, preventing Console.ReadKey from blocking/throwing in redirected-stdin environments:

  if (testFlags.HasFlag(TestFlags.ReadKeyFromStdin))
      _ = ListenToStandardInputAsync();
  else if (!Console.IsInputRedirected)
      _ = ListenToConsoleKeyPressAsync();

[marcpopMSFT]

@MichaelSimons per #54277, I asked copilot which changes from Matt's test stability PR to backport and it chose these two. 4xx doesn't require tactics so should be reasonable to backport. We'd have to consider risk more closely for a 1xx backport.