Fix CS9336 pattern matching error for .NET 11 SDK

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PR Title
Fix CS9336 pattern matching error for .NET 11 SDK

PR Description

.NET 11 SDK rejects ambiguous pattern matching syntax. Fixed by adding parentheses to clarify precedence:

// Before - CS9336: The pattern is redundant
if (_state is not State.RaisingPreContent or State.RaisingPreHeader)

// After
if (_state is not (State.RaisingPreContent or State.RaisingPreHeader))

Changed file: src/Microsoft.AspNetCore.SystemWebAdapters.CoreServices/Features/HttpApplicationPreSendEventsResponseBodyFeature.cs:67

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Just as a heads up, I was blocked by some firewall rules while working on your feedback. Expand below for details.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• 0t3vsblobprodcus362.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore (dns block)
• 11vvsblobprodcus336.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore (dns block)
• 2zrvsblobprodcus388.vsblob.vsassets.io
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• 37bvsblobprodcus311.vsblob.vsassets.io
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• 4myvsblobprodcus32.vsblob.vsassets.io
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• 7devsblobprodcus323.vsblob.vsassets.io
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• 80zvsblobprodcus35.vsblob.vsassets.io
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• 8xbvsblobprodcus382.vsblob.vsassets.io
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• 96bvsblobprodcus338.vsblob.vsassets.io
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• ajhvsblobprodcus363.vsblob.vsassets.io
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• bcnvsblobprodcus378.vsblob.vsassets.io
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• d0svsblobprodcus381.vsblob.vsassets.io
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• frdvsblobprodcus327.vsblob.vsassets.io
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• gbsvsblobprodcus365.vsblob.vsassets.io
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• gervsblobprodcus329.vsblob.vsassets.io
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• https://api.github.com/repos/dotnet/systemweb-adapters/commits/b3256576178915abe043f41800b56f96765d78a4/check-runs
  • Triggering command: /usr/bin/curl curl -s -H Accept: application/vnd.github.v3+json REDACTED (http block)
• i1qvsblobprodcus353.vsblob.vsassets.io
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• ibzvsblobprodcus369.vsblob.vsassets.io
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• imzvsblobprodcus368.vsblob.vsassets.io
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• jd4vsblobprodcus366.vsblob.vsassets.io
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• kh4vsblobprodcus325.vsblob.vsassets.io
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• kijvsblobprodcus387.vsblob.vsassets.io
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• kmuvsblobprodcus389.vsblob.vsassets.io
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• l49vsblobprodcus358.vsblob.vsassets.io
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• lylvsblobprodcus31.vsblob.vsassets.io
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• m8dvsblobprodcus37.vsblob.vsassets.io
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• mfjvsblobprodcus373.vsblob.vsassets.io
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• n3kvsblobprodcus335.vsblob.vsassets.io
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• ofvvsblobprodcus315.vsblob.vsassets.io
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• p2ovsblobprodcus312.vsblob.vsassets.io
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• pc2vsblobprodcus360.vsblob.vsassets.io
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• pkvvsblobprodcus321.vsblob.vsassets.io
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• rcxvsblobprodcus328.vsblob.vsassets.io
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• s4uvsblobprodcus326.vsblob.vsassets.io
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• s8mvsblobprodcus38.vsblob.vsassets.io
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• u3hvsblobprodcus371.vsblob.vsassets.io
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• u6ovsblobprodcus377.vsblob.vsassets.io
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• v53vsblobprodcus320.vsblob.vsassets.io
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• vb4vsblobprodcus33.vsblob.vsassets.io
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• vwvvsblobprodcus334.vsblob.vsassets.io
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• xupvsblobprodcus332.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)